Common Weakness Enumeration

CWE-444

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

CVE-2026-1002 (GCVE-0-2026-1002)

Vulnerability from cvelistv5 – Published: 2026-01-15 20:50 – Updated: 2026-01-15 21:09
VLAI
Title
Eclipse Vert.x Web static handler file access denial
Summary
The Vert.x Web static handler component cache can be manipulated to deny the access to static files served by the handler using specifically crafted request URI. The issue comes from an improper implementation of the C. rule of section 5.2.4 of RFC3986 and is fixed in Vert.x Core component (used by Vert.x Web): https://github.com/eclipse-vertx/vert.x/pull/5895 Steps to reproduce Given a file served by the static handler, craft an URI that introduces a string like bar%2F..%2F after the last / char to deny the access to the URI with an HTTP 404 response. For example https://example.com/foo/index.html can be denied with https://example.com/foo/bar%2F..%2Findex.html Mitgation Disabling Static Handler cache fixes the issue. StaticHandler staticHandler = StaticHandler.create().setCachingEnabled(false);
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Eclipse Vert.x Eclipse Vert.x Affected: 4.0.0 , ≤ 4.5.23 (semver)
Affected: 5.0.0 , ≤ 5.0.6 (semver)
Create a notification for this product.
Show details on NVD website
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CVE-2026-11541 (GCVE-0-2026-11541)

Vulnerability from cvelistv5 – Published: 2026-06-30 20:56 – Updated: 2026-07-01 14:52
VLAI
Title
IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by HTTP request smuggling
Summary
IBM WebSphere Application Server 9.0, and 8.5 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.6 are affected by an HTTP request smuggling vulnerability.
Severity
7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
ibm
References
URL Tags
https://www.ibm.com/support/pages/node/7277550 vendor-advisorypatch
Impacted products
Vendor Product Version
IBM WebSphere Application Server Affected: 9.0
Affected: 8.5
    cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:websphere_application_server:9.0.0:*:*:*:*:*:*:*
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    cpe:2.3:a:ibm:websphere_application_server:8.5.0:*:*:*:*:*:*:*
 Create a notification for this product.
IBM WebSphere Application Server - Liberty Affected: 17.0.0.3 , ≤ 26.0.0.6 (semver)
    cpe:2.3:a:ibm:websphere_application_server___liberty:17.0.0.3:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:websphere_application_server___liberty:26.0.0.6:*:*:*:*:*:*:*
 Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-11806 (GCVE-0-2026-11806)

Vulnerability from cvelistv5 – Published: 2026-06-30 19:43 – Updated: 2026-07-01 14:47
VLAI
Title
IBM WebSphere Application Server Liberty is affected by a an arbitrary file read vulnerability
Summary
IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.6 is affected by an arbitrary file read vulnerability with the restConnector-2.0 feature enabled.
Severity
7.2 (High)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
ibm
References
URL Tags
https://www.ibm.com/support/pages/node/7277536 vendor-advisorypatch
Impacted products
Vendor Product Version
IBM WebSphere Application Server - Liberty Affected: 17.0.0.3 , ≤ 26.0.0.6 (semver)
    cpe:2.3:a:ibm:websphere_application_server___liberty:17.0.0.3:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:websphere_application_server___liberty:26.0.0.6:*:*:*:*:*:*:*
 Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-13762 (GCVE-0-2026-13762)

Vulnerability from cvelistv5 – Published: 2026-06-29 20:03 – Updated: 2026-06-29 20:51 Exclusively Hosted Service
VLAI
Title
HTTP/2 Stream Parser Confusion Body-Inspection Bypass in Amazon CloudFront with AWS WAF
Summary
Inconsistent interpretation of HTTP/2 requests in Amazon CloudFront with AWS WAF enabled might allow remote actors to bypass AWS WAF managed rule body inspection via crafted HTTP/2 requests that fragment the request body across frames so that only a partial body is inspected. This issue was remediated server-side. No customer action is required.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.9 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-444 - Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling')
Assigner
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2026-13763 (GCVE-0-2026-13763)

Vulnerability from cvelistv5 – Published: 2026-06-29 20:03 – Updated: 2026-06-29 20:50 Exclusively Hosted Service
VLAI
Title
HTTP/2 Stream Parser Confusion Body-Inspection Bypass in AWS Application Load Balancer with AWS WAF
Summary
Inconsistent interpretation of HTTP/2 requests in AWS Application Load Balancer with AWS WAF enabled might allow remote actors to bypass AWS WAF managed rule body inspection via crafted HTTP/2 requests that fragment the request body across frames so that only a partial body is inspected. This issue only impacts HTTP/2 ALB target groups. To remediate this issue, customers should enable the "Inspect after sufficient data" target group configuration associated to an ALB load balancer. Refer to: ( https://docs.aws.amazon.com/elasticloadbalancing/latest/application/edit-target-group-attributes.html#waf-http2-inspection )
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.9 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-444 - Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling')
Assigner
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2026-1491 (GCVE-0-2026-1491)

Vulnerability from cvelistv5 – Published: 2026-04-01 20:44 – Updated: 2026-04-08 00:18
VLAI
Title
Security Vulnerabilities have been found in IBM Verify Identity Access and IBM Security Verify Access
Summary
IBM Verify Identity Access Container 11.0 through 11.0.2 and IBM Security Verify Access Container 10.0 through 10.0.9.1 and IBM Verify Identity Access 11.0 through 11.0.2 and IBM Security Verify Access 10.0 through 10.0.9.1 IBM Security Verify could allow a remote attacker to access sensitive information due to an inconsistent interpretation of an HTTP request by a reverse proxy.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
ibm
References
URL Tags
https://www.ibm.com/support/pages/node/7268253 vendor-advisorypatch
Impacted products
Vendor Product Version
IBM Verify Identity Access Container Affected: 11.0 , ≤ 11.0.2 (semver)
    cpe:2.3:a:ibm:verify_identity_access_container:11.0:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:verify_identity_access_container:11.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:verify_identity_access_container:11.0.2:*:*:*:*:*:*:*
 Create a notification for this product.
IBM Security Verify Access Container Affected: 10.0 , ≤ 10.0.9.1 (semver)
    cpe:2.3:a:ibm:security_verify_access_container:10.0:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:security_verify_access_container:10.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:security_verify_access_container:10.0.9.1:*:*:*:*:*:*:*
 Create a notification for this product.
IBM Verify Identity Access Affected: 11.0 , ≤ 11.0.2 (semver)
    cpe:2.3:a:ibm:verify_identity_access:11.0:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:verify_identity_access:11.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:verify_identity_access:11.0.2:*:*:*:*:*:*:*
 Create a notification for this product.
IBM Security Verify Access Affected: 10.0 , ≤ 10.0.9.1 (semver)
    cpe:2.3:a:ibm:security_verify_access:10.0:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:security_verify_access:10.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:security_verify_access:10.0.9.1:*:*:*:*:*:*:*
 Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-1525 (GCVE-0-2026-1525)

Vulnerability from cvelistv5 – Published: 2026-03-12 19:56 – Updated: 2026-03-12 20:46
VLAI
Title
undici is vulnerable to Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Summary
Undici allows duplicate HTTP Content-Length headers when they are provided in an array with case-variant names (e.g., Content-Length and content-length). This produces malformed HTTP/1.1 requests with multiple conflicting Content-Length values on the wire. Who is impacted: * Applications using undici.request(), undici.Client, or similar low-level APIs with headers passed as flat arrays * Applications that accept user-controlled header names without case-normalization Potential consequences: * Denial of Service: Strict HTTP parsers (proxies, servers) will reject requests with duplicate Content-Length headers (400 Bad Request) * HTTP Request Smuggling: In deployments where an intermediary and backend interpret duplicate headers inconsistently (e.g., one uses the first value, the other uses the last), this can enable request smuggling attacks leading to ACL bypass, cache poisoning, or credential hijacking
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-444 - Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling')
Assigner
References
Impacted products
Vendor Product Version
undici undici Affected: < 6.24.0; 7.0.0 < 7.24.0
Unaffected: 6.24.0: 7.24.0
Create a notification for this product.
Credits
Matteo Collina Ulises Gascón
Show details on NVD website
To clipboard 

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CVE-2026-1760 (GCVE-0-2026-1760)

Vulnerability from cvelistv5 – Published: 2026-02-02 14:01 – Updated: 2026-03-19 14:20
VLAI
Title
Libsoup: soupserver: denial of service via http request smuggling
Summary
A flaw was found in SoupServer. This HTTP request smuggling vulnerability occurs because SoupServer improperly handles requests that combine Transfer-Encoding: chunked and Connection: keep-alive headers. A remote, unauthenticated client can exploit this by sending specially crafted requests, causing SoupServer to fail to close the connection as required by RFC 9112. This allows the attacker to smuggle additional requests over the persistent connection, leading to unintended request processing and potential denial-of-service (DoS) conditions.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
Impacted products
Date Public
2026-02-02 00:00
Show details on NVD website
To clipboard 

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CVE-2026-1801 (GCVE-0-2026-1801)

Vulnerability from cvelistv5 – Published: 2026-02-03 20:12 – Updated: 2026-03-26 18:58
VLAI
Title
Libsoup: libsoup: http request smuggling via malformed chunk headers
Summary
A flaw was found in libsoup, an HTTP client/server library. This HTTP Request Smuggling vulnerability arises from non-RFC-compliant parsing in the soup_filter_input_stream_read_line() logic, where libsoup accepts malformed chunk headers, such as lone line feed (LF) characters instead of the required carriage return and line feed (CRLF). A remote attacker can exploit this without authentication or user interaction by sending specially crafted chunked requests. This allows libsoup to parse and process multiple HTTP requests from a single network message, potentially leading to information disclosure.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
Impacted products
Date Public
2026-02-03 00:00
Credits
Red Hat would like to thank Ahmed Lekssays for reporting this issue.
Show details on NVD website
To clipboard 

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CVE-2026-20069 (GCVE-0-2026-20069)

Vulnerability from cvelistv5 – Published: 2026-03-04 17:51 – Updated: 2026-03-04 20:24
VLAI
Title
Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software VPN Web Services Client-Side Request Smuggling Vulnerability
Summary
A vulnerability in the VPN web services component of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct browser-based attacks against users of an affected device. This vulnerability is due to improper validation of HTTP requests. An attacker could exploit this vulnerability by persuading a user to visit a website that is designed to pass malicious HTTP requests to a device that is running Cisco Secure Firewall ASA Software or Cisco Secure FTD Software and has web services endpoints supporting VPN features enabled. A successful exploit could allow the attacker to reflect malicious input from the affected device to the browser that is in use and conduct browser-based attacks, including cross-site scripting (XSS) attacks. The attacker is not able to directly impact the affected device.
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
Impacted products
Vendor Product Version
Cisco Cisco Secure Firewall Adaptive Security Appliance (ASA) Software Affected: 9.12.3
Affected: 9.12.1
Affected: 9.12.2
Affected: 9.12.4
Affected: 9.12.3.2
Affected: 9.12.3.7
Affected: 9.12.2.5
Affected: 9.12.3.12
Affected: 9.12.1.3
Affected: 9.12.2.4
Affected: 9.12.1.2
Affected: 9.12.2.9
Affected: 9.12.3.9
Affected: 9.12.2.1
Affected: 9.12.4.2
Affected: 9.12.4.4
Affected: 9.12.4.7
Affected: 9.12.4.8
Affected: 9.12.4.10
Affected: 9.12.4.13
Affected: 9.12.4.18
Affected: 9.12.4.24
Affected: 9.16.1
Affected: 9.12.4.26
Affected: 9.16.1.28
Affected: 9.12.4.29
Affected: 9.16.2
Affected: 9.12.4.30
Affected: 9.16.2.3
Affected: 9.12.4.35
Affected: 9.16.2.7
Affected: 9.12.4.37
Affected: 9.17.1
Affected: 9.16.2.11
Affected: 9.16.2.13
Affected: 9.12.4.39
Affected: 9.12.4.38
Affected: 9.16.2.14
Affected: 9.17.1.7
Affected: 9.12.4.40
Affected: 9.16.3.3
Affected: 9.16.3
Affected: 9.16.3.14
Affected: 9.17.1.9
Affected: 9.12.4.41
Affected: 9.17.1.10
Affected: 9.18.1
Affected: 9.12.4.47
Affected: 9.16.3.15
Affected: 9.18.1.3
Affected: 9.17.1.11
Affected: 9.12.4.48
Affected: 9.18.2
Affected: 9.16.3.19
Affected: 9.17.1.13
Affected: 9.12.4.50
Affected: 9.17.1.15
Affected: 9.12.4.52
Affected: 9.16.3.23
Affected: 9.18.2.5
Affected: 9.16.4
Affected: 9.12.4.54
Affected: 9.17.1.20
Affected: 9.18.2.7
Affected: 9.19.1
Affected: 9.16.4.9
Affected: 9.12.4.55
Affected: 9.18.2.8
Affected: 9.16.4.14
Affected: 9.18.3
Affected: 9.19.1.5
Affected: 9.12.4.56
Affected: 9.17.1.30
Affected: 9.19.1.9
Affected: 9.18.3.39
Affected: 9.16.4.19
Affected: 9.12.4.58
Affected: 9.19.1.12
Affected: 9.18.3.46
Affected: 9.16.4.27
Affected: 9.19.1.18
Affected: 9.18.3.53
Affected: 9.18.3.55
Affected: 9.16.4.38
Affected: 9.17.1.33
Affected: 9.12.4.62
Affected: 9.16.4.39
Affected: 9.18.3.56
Affected: 9.20.1
Affected: 9.16.4.42
Affected: 9.19.1.22
Affected: 9.18.4
Affected: 9.20.1.5
Affected: 9.18.4.5
Affected: 9.19.1.24
Affected: 9.16.4.48
Affected: 9.18.4.8
Affected: 9.20.2
Affected: 9.19.1.27
Affected: 9.12.4.65
Affected: 9.16.4.55
Affected: 9.18.4.22
Affected: 9.20.2.10
Affected: 9.16.4.57
Affected: 9.19.1.28
Affected: 9.17.1.39
Affected: 9.12.4.67
Affected: 9.18.4.24
Affected: 9.20.2.21
Affected: 9.16.4.61
Affected: 9.19.1.31
Affected: 9.18.4.29
Affected: 9.20.2.22
Affected: 9.16.4.62
Affected: 9.18.4.34
Affected: 9.20.3
Affected: 9.16.4.67
Affected: 9.16.4.70
Affected: 9.18.4.40
Affected: 9.23.1
Affected: 9.22.1.1
Affected: 9.16.4.71
Affected: 9.20.3.4
Affected: 9.18.4.47
Affected: 9.20.3.7
Affected: 9.17.1.45
Affected: 9.19.1.37
Affected: 9.17.1.46
Affected: 9.16.4.76
Affected: 9.20.3.9
Affected: 9.19.1.38
Affected: 9.18.4.50
Affected: 9.22.1.3
Affected: 9.20.3.10
Affected: 9.22.1.2
Affected: 9.18.4.52
Affected: 9.20.3.13
Affected: 9.22.1.6
Affected: 9.18.4.53
Affected: 9.16.4.82
Affected: 9.22.2
Affected: 9.20.3.16
Affected: 9.19.1.42
Affected: 9.18.4.57
Affected: 9.16.4.84
Affected: 9.23.1.3
Affected: 9.20.3.20
Affected: 9.22.2.4
Affected: 9.23.1.7
Affected: 9.20.4
Affected: 9.22.2.9
Create a notification for this product.
Cisco Cisco Secure Firewall Threat Defense (FTD) Software Affected: 6.4.0.1
Affected: 6.4.0.2
Affected: 6.4.0.5
Affected: 6.4.0
Affected: 6.4.0.3
Affected: 6.4.0.4
Affected: 6.4.0.6
Affected: 6.4.0.7
Affected: 6.4.0.8
Affected: 6.4.0.9
Affected: 6.4.0.10
Affected: 6.4.0.11
Affected: 6.4.0.12
Affected: 7.0.0
Affected: 7.0.0.1
Affected: 7.0.1
Affected: 7.1.0
Affected: 6.4.0.13
Affected: 7.0.1.1
Affected: 6.4.0.14
Affected: 7.1.0.1
Affected: 7.0.2
Affected: 6.4.0.15
Affected: 7.2.0
Affected: 7.0.2.1
Affected: 7.0.3
Affected: 7.1.0.2
Affected: 7.2.0.1
Affected: 7.0.4
Affected: 7.2.1
Affected: 7.0.5
Affected: 6.4.0.16
Affected: 7.3.0
Affected: 7.2.2
Affected: 7.2.3
Affected: 7.3.1
Affected: 7.1.0.3
Affected: 7.2.4
Affected: 7.0.6
Affected: 7.2.5
Affected: 7.2.4.1
Affected: 7.3.1.1
Affected: 7.4.0
Affected: 6.4.0.17
Affected: 7.0.6.1
Affected: 7.2.5.1
Affected: 7.4.1
Affected: 7.2.6
Affected: 7.0.6.2
Affected: 7.4.1.1
Affected: 6.4.0.18
Affected: 7.2.7
Affected: 7.2.5.2
Affected: 7.3.1.2
Affected: 7.2.8
Affected: 7.6.0
Affected: 7.4.2
Affected: 7.2.8.1
Affected: 7.0.6.3
Affected: 7.4.2.1
Affected: 7.2.9
Affected: 7.0.7
Affected: 7.7.0
Affected: 7.4.2.2
Affected: 7.2.10
Affected: 7.6.1
Affected: 7.4.2.3
Affected: 7.0.8
Affected: 7.6.2
Affected: 7.7.10
Affected: 7.0.8.1
Affected: 7.6.2.1
Affected: 7.7.10.1
Affected: 7.4.2.4
Affected: 7.2.10.2
Create a notification for this product.
Show details on NVD website
To clipboard 

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              "status": "affected",
              "version": "9.12.4.48"
            },
            {
              "status": "affected",
              "version": "9.18.2"
            },
            {
              "status": "affected",
              "version": "9.16.3.19"
            },
            {
              "status": "affected",
              "version": "9.17.1.13"
            },
            {
              "status": "affected",
              "version": "9.12.4.50"
            },
            {
              "status": "affected",
              "version": "9.17.1.15"
            },
            {
              "status": "affected",
              "version": "9.12.4.52"
            },
            {
              "status": "affected",
              "version": "9.16.3.23"
            },
            {
              "status": "affected",
              "version": "9.18.2.5"
            },
            {
              "status": "affected",
              "version": "9.16.4"
            },
            {
              "status": "affected",
              "version": "9.12.4.54"
            },
            {
              "status": "affected",
              "version": "9.17.1.20"
            },
            {
              "status": "affected",
              "version": "9.18.2.7"
            },
            {
              "status": "affected",
              "version": "9.19.1"
            },
            {
              "status": "affected",
              "version": "9.16.4.9"
            },
            {
              "status": "affected",
              "version": "9.12.4.55"
            },
            {
              "status": "affected",
              "version": "9.18.2.8"
            },
            {
              "status": "affected",
              "version": "9.16.4.14"
            },
            {
              "status": "affected",
              "version": "9.18.3"
            },
            {
              "status": "affected",
              "version": "9.19.1.5"
            },
            {
              "status": "affected",
              "version": "9.12.4.56"
            },
            {
              "status": "affected",
              "version": "9.17.1.30"
            },
            {
              "status": "affected",
              "version": "9.19.1.9"
            },
            {
              "status": "affected",
              "version": "9.18.3.39"
            },
            {
              "status": "affected",
              "version": "9.16.4.19"
            },
            {
              "status": "affected",
              "version": "9.12.4.58"
            },
            {
              "status": "affected",
              "version": "9.19.1.12"
            },
            {
              "status": "affected",
              "version": "9.18.3.46"
            },
            {
              "status": "affected",
              "version": "9.16.4.27"
            },
            {
              "status": "affected",
              "version": "9.19.1.18"
            },
            {
              "status": "affected",
              "version": "9.18.3.53"
            },
            {
              "status": "affected",
              "version": "9.18.3.55"
            },
            {
              "status": "affected",
              "version": "9.16.4.38"
            },
            {
              "status": "affected",
              "version": "9.17.1.33"
            },
            {
              "status": "affected",
              "version": "9.12.4.62"
            },
            {
              "status": "affected",
              "version": "9.16.4.39"
            },
            {
              "status": "affected",
              "version": "9.18.3.56"
            },
            {
              "status": "affected",
              "version": "9.20.1"
            },
            {
              "status": "affected",
              "version": "9.16.4.42"
            },
            {
              "status": "affected",
              "version": "9.19.1.22"
            },
            {
              "status": "affected",
              "version": "9.18.4"
            },
            {
              "status": "affected",
              "version": "9.20.1.5"
            },
            {
              "status": "affected",
              "version": "9.18.4.5"
            },
            {
              "status": "affected",
              "version": "9.19.1.24"
            },
            {
              "status": "affected",
              "version": "9.16.4.48"
            },
            {
              "status": "affected",
              "version": "9.18.4.8"
            },
            {
              "status": "affected",
              "version": "9.20.2"
            },
            {
              "status": "affected",
              "version": "9.19.1.27"
            },
            {
              "status": "affected",
              "version": "9.12.4.65"
            },
            {
              "status": "affected",
              "version": "9.16.4.55"
            },
            {
              "status": "affected",
              "version": "9.18.4.22"
            },
            {
              "status": "affected",
              "version": "9.20.2.10"
            },
            {
              "status": "affected",
              "version": "9.16.4.57"
            },
            {
              "status": "affected",
              "version": "9.19.1.28"
            },
            {
              "status": "affected",
              "version": "9.17.1.39"
            },
            {
              "status": "affected",
              "version": "9.12.4.67"
            },
            {
              "status": "affected",
              "version": "9.18.4.24"
            },
            {
              "status": "affected",
              "version": "9.20.2.21"
            },
            {
              "status": "affected",
              "version": "9.16.4.61"
            },
            {
              "status": "affected",
              "version": "9.19.1.31"
            },
            {
              "status": "affected",
              "version": "9.18.4.29"
            },
            {
              "status": "affected",
              "version": "9.20.2.22"
            },
            {
              "status": "affected",
              "version": "9.16.4.62"
            },
            {
              "status": "affected",
              "version": "9.18.4.34"
            },
            {
              "status": "affected",
              "version": "9.20.3"
            },
            {
              "status": "affected",
              "version": "9.16.4.67"
            },
            {
              "status": "affected",
              "version": "9.16.4.70"
            },
            {
              "status": "affected",
              "version": "9.18.4.40"
            },
            {
              "status": "affected",
              "version": "9.23.1"
            },
            {
              "status": "affected",
              "version": "9.22.1.1"
            },
            {
              "status": "affected",
              "version": "9.16.4.71"
            },
            {
              "status": "affected",
              "version": "9.20.3.4"
            },
            {
              "status": "affected",
              "version": "9.18.4.47"
            },
            {
              "status": "affected",
              "version": "9.20.3.7"
            },
            {
              "status": "affected",
              "version": "9.17.1.45"
            },
            {
              "status": "affected",
              "version": "9.19.1.37"
            },
            {
              "status": "affected",
              "version": "9.17.1.46"
            },
            {
              "status": "affected",
              "version": "9.16.4.76"
            },
            {
              "status": "affected",
              "version": "9.20.3.9"
            },
            {
              "status": "affected",
              "version": "9.19.1.38"
            },
            {
              "status": "affected",
              "version": "9.18.4.50"
            },
            {
              "status": "affected",
              "version": "9.22.1.3"
            },
            {
              "status": "affected",
              "version": "9.20.3.10"
            },
            {
              "status": "affected",
              "version": "9.22.1.2"
            },
            {
              "status": "affected",
              "version": "9.18.4.52"
            },
            {
              "status": "affected",
              "version": "9.20.3.13"
            },
            {
              "status": "affected",
              "version": "9.22.1.6"
            },
            {
              "status": "affected",
              "version": "9.18.4.53"
            },
            {
              "status": "affected",
              "version": "9.16.4.82"
            },
            {
              "status": "affected",
              "version": "9.22.2"
            },
            {
              "status": "affected",
              "version": "9.20.3.16"
            },
            {
              "status": "affected",
              "version": "9.19.1.42"
            },
            {
              "status": "affected",
              "version": "9.18.4.57"
            },
            {
              "status": "affected",
              "version": "9.16.4.84"
            },
            {
              "status": "affected",
              "version": "9.23.1.3"
            },
            {
              "status": "affected",
              "version": "9.20.3.20"
            },
            {
              "status": "affected",
              "version": "9.22.2.4"
            },
            {
              "status": "affected",
              "version": "9.23.1.7"
            },
            {
              "status": "affected",
              "version": "9.20.4"
            },
            {
              "status": "affected",
              "version": "9.22.2.9"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "Cisco Secure Firewall Threat Defense (FTD) Software",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "6.4.0.1"
            },
            {
              "status": "affected",
              "version": "6.4.0.2"
            },
            {
              "status": "affected",
              "version": "6.4.0.5"
            },
            {
              "status": "affected",
              "version": "6.4.0"
            },
            {
              "status": "affected",
              "version": "6.4.0.3"
            },
            {
              "status": "affected",
              "version": "6.4.0.4"
            },
            {
              "status": "affected",
              "version": "6.4.0.6"
            },
            {
              "status": "affected",
              "version": "6.4.0.7"
            },
            {
              "status": "affected",
              "version": "6.4.0.8"
            },
            {
              "status": "affected",
              "version": "6.4.0.9"
            },
            {
              "status": "affected",
              "version": "6.4.0.10"
            },
            {
              "status": "affected",
              "version": "6.4.0.11"
            },
            {
              "status": "affected",
              "version": "6.4.0.12"
            },
            {
              "status": "affected",
              "version": "7.0.0"
            },
            {
              "status": "affected",
              "version": "7.0.0.1"
            },
            {
              "status": "affected",
              "version": "7.0.1"
            },
            {
              "status": "affected",
              "version": "7.1.0"
            },
            {
              "status": "affected",
              "version": "6.4.0.13"
            },
            {
              "status": "affected",
              "version": "7.0.1.1"
            },
            {
              "status": "affected",
              "version": "6.4.0.14"
            },
            {
              "status": "affected",
              "version": "7.1.0.1"
            },
            {
              "status": "affected",
              "version": "7.0.2"
            },
            {
              "status": "affected",
              "version": "6.4.0.15"
            },
            {
              "status": "affected",
              "version": "7.2.0"
            },
            {
              "status": "affected",
              "version": "7.0.2.1"
            },
            {
              "status": "affected",
              "version": "7.0.3"
            },
            {
              "status": "affected",
              "version": "7.1.0.2"
            },
            {
              "status": "affected",
              "version": "7.2.0.1"
            },
            {
              "status": "affected",
              "version": "7.0.4"
            },
            {
              "status": "affected",
              "version": "7.2.1"
            },
            {
              "status": "affected",
              "version": "7.0.5"
            },
            {
              "status": "affected",
              "version": "6.4.0.16"
            },
            {
              "status": "affected",
              "version": "7.3.0"
            },
            {
              "status": "affected",
              "version": "7.2.2"
            },
            {
              "status": "affected",
              "version": "7.2.3"
            },
            {
              "status": "affected",
              "version": "7.3.1"
            },
            {
              "status": "affected",
              "version": "7.1.0.3"
            },
            {
              "status": "affected",
              "version": "7.2.4"
            },
            {
              "status": "affected",
              "version": "7.0.6"
            },
            {
              "status": "affected",
              "version": "7.2.5"
            },
            {
              "status": "affected",
              "version": "7.2.4.1"
            },
            {
              "status": "affected",
              "version": "7.3.1.1"
            },
            {
              "status": "affected",
              "version": "7.4.0"
            },
            {
              "status": "affected",
              "version": "6.4.0.17"
            },
            {
              "status": "affected",
              "version": "7.0.6.1"
            },
            {
              "status": "affected",
              "version": "7.2.5.1"
            },
            {
              "status": "affected",
              "version": "7.4.1"
            },
            {
              "status": "affected",
              "version": "7.2.6"
            },
            {
              "status": "affected",
              "version": "7.0.6.2"
            },
            {
              "status": "affected",
              "version": "7.4.1.1"
            },
            {
              "status": "affected",
              "version": "6.4.0.18"
            },
            {
              "status": "affected",
              "version": "7.2.7"
            },
            {
              "status": "affected",
              "version": "7.2.5.2"
            },
            {
              "status": "affected",
              "version": "7.3.1.2"
            },
            {
              "status": "affected",
              "version": "7.2.8"
            },
            {
              "status": "affected",
              "version": "7.6.0"
            },
            {
              "status": "affected",
              "version": "7.4.2"
            },
            {
              "status": "affected",
              "version": "7.2.8.1"
            },
            {
              "status": "affected",
              "version": "7.0.6.3"
            },
            {
              "status": "affected",
              "version": "7.4.2.1"
            },
            {
              "status": "affected",
              "version": "7.2.9"
            },
            {
              "status": "affected",
              "version": "7.0.7"
            },
            {
              "status": "affected",
              "version": "7.7.0"
            },
            {
              "status": "affected",
              "version": "7.4.2.2"
            },
            {
              "status": "affected",
              "version": "7.2.10"
            },
            {
              "status": "affected",
              "version": "7.6.1"
            },
            {
              "status": "affected",
              "version": "7.4.2.3"
            },
            {
              "status": "affected",
              "version": "7.0.8"
            },
            {
              "status": "affected",
              "version": "7.6.2"
            },
            {
              "status": "affected",
              "version": "7.7.10"
            },
            {
              "status": "affected",
              "version": "7.0.8.1"
            },
            {
              "status": "affected",
              "version": "7.6.2.1"
            },
            {
              "status": "affected",
              "version": "7.7.10.1"
            },
            {
              "status": "affected",
              "version": "7.4.2.4"
            },
            {
              "status": "affected",
              "version": "7.2.10.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the VPN web services component of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct browser-based attacks against users of an affected device.\r\n\r\nThis vulnerability is due to improper validation of HTTP requests. An attacker could exploit this vulnerability by persuading a user to visit a website that is designed to pass malicious HTTP requests to a device that is running Cisco Secure Firewall ASA Software or Cisco Secure FTD Software and has web services endpoints supporting VPN features enabled. A successful exploit could allow the attacker to reflect malicious input from the affected device to the browser that is in use and conduct browser-based attacks, including cross-site scripting (XSS) attacks. The attacker is not able to directly impact the affected device."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco\u00a0Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
            "version": "3.1"
          },
          "format": "cvssV3_1"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-444",
              "description": "Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request/Response Smuggling\u0027)",
              "lang": "en",
              "type": "cwe"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-04T17:51:01.338Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "cisco-sa-asaftd-desync-n5AVzEQw",
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-desync-n5AVzEQw"
        }
      ],
      "source": {
        "advisory": "cisco-sa-asaftd-desync-n5AVzEQw",
        "defects": [
          "CSCwq02055"
        ],
        "discovery": "EXTERNAL"
      },
      "title": "Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software VPN Web Services Client-Side Request Smuggling Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2026-20069",
    "datePublished": "2026-03-04T17:51:01.338Z",
    "dateReserved": "2025-10-08T11:59:15.357Z",
    "dateUpdated": "2026-03-04T20:24:29.280Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}
Mitigation

Phase: Implementation

Description:

  • Use a web server that employs a strict HTTP parsing procedure, such as Apache [REF-433].
Mitigation

Phase: Implementation

Description:

  • Use only SSL communication.
Mitigation

Phase: Implementation

Description:

  • Terminate the client session after each request.
Mitigation

Phase: System Configuration

Description:

  • Turn all pages to non-cacheable.
CAPEC-273: HTTP Response Smuggling

['An adversary manipulates and injects malicious content in the form of secret unauthorized HTTP responses, into a single HTTP response from a vulnerable or compromised back-end HTTP agent (e.g., server).', 'See CanPrecede relationships for possible consequences.']

CAPEC-33: HTTP Request Smuggling

['An adversary abuses the flexibility and discrepancies in the parsing and interpretation of HTTP Request messages using various HTTP headers, request-line and body parameters as well as message sizes (denoted by the end of message signaled by a given HTTP header) by different intermediary HTTP agents (e.g., load balancer, reverse proxy, web caching proxies, application firewalls, etc.) to secretly send unauthorized and malicious HTTP requests to a back-end HTTP agent (e.g., web server).', 'See CanPrecede relationships for possible consequences.']

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