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46 vulnerabilities found for Apache HTTP Server by Apache Software Foundation
CVE-2025-54090 (GCVE-0-2025-54090)
Vulnerability from nvd
Published
2025-07-23 13:19
Modified
2025-11-04 21:12
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-253 - Incorrect Check of Function Return Value
Summary
A bug in Apache HTTP Server 2.4.64 results in all "RewriteCond expr ..." tests evaluating as "true".
Users are recommended to upgrade to version 2.4.65, which fixes the issue.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
Version: 2.4.64 ≤ |
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CVE-2025-53020 (GCVE-0-2025-53020)
Vulnerability from nvd
Published
2025-07-10 16:59
Modified
2025-11-04 21:11
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Summary
Late Release of Memory after Effective Lifetime vulnerability in Apache HTTP Server.
This issue affects Apache HTTP Server: from 2.4.17 up to 2.4.63.
Users are recommended to upgrade to version 2.4.64, which fixes the issue.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
Version: 2.4.17 ≤ 2.4.63 |
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CVE-2025-49812 (GCVE-0-2025-49812)
Vulnerability from nvd
Published
2025-07-10 16:58
Modified
2025-11-04 21:11
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-287 - Improper Authentication
Summary
In some mod_ssl configurations on Apache HTTP Server versions through to 2.4.63, an HTTP desynchronisation attack allows a man-in-the-middle attacker to hijack an HTTP session via a TLS upgrade.
Only configurations using "SSLEngine optional" to enable TLS upgrades are affected. Users are recommended to upgrade to version 2.4.64, which removes support for TLS upgrade.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
Version: 0 ≤ 2.4.63 |
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CVE-2025-49630 (GCVE-0-2025-49630)
Vulnerability from nvd
Published
2025-07-10 16:57
Modified
2025-11-04 21:11
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-617 - Reachable Assertion
Summary
In certain proxy configurations, a denial of service attack against Apache HTTP Server versions 2.4.26 through to 2.4.63 can be triggered by untrusted clients causing an assertion in mod_proxy_http2.
Configurations affected are a reverse proxy is configured for an HTTP/2 backend, with ProxyPreserveHost set to "on".
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
Version: 2.4.26 ≤ 2.4.63 |
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CVE-2025-23048 (GCVE-0-2025-23048)
Vulnerability from nvd
Published
2025-07-10 16:56
Modified
2025-11-04 21:09
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-284 - Improper Access Control
Summary
In some mod_ssl configurations on Apache HTTP Server 2.4.35 through to 2.4.63, an access control bypass by trusted clients is possible using TLS 1.3 session resumption.
Configurations are affected when mod_ssl is configured for multiple virtual hosts, with each restricted to a different set of trusted client certificates (for example with a different SSLCACertificateFile/Path setting). In such a case, a client trusted to access one virtual host may be able to access another virtual host, if SSLStrictSNIVHostCheck is not enabled in either virtual host.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
Version: 2.4.35 ≤ 2.4.63 |
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CVE-2024-47252 (GCVE-0-2024-47252)
Vulnerability from nvd
Published
2025-07-10 16:55
Modified
2025-11-04 21:08
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-150 - Improper Neutralization of Escape, Meta, or Control Sequences
Summary
Insufficient escaping of user-supplied data in mod_ssl in Apache HTTP Server 2.4.63 and earlier allows an untrusted SSL/TLS client to insert escape characters into log files in some configurations.
In a logging configuration where CustomLog is used with "%{varname}x" or "%{varname}c" to log variables provided by mod_ssl such as SSL_TLS_SNI, no escaping is performed by either mod_log_config or mod_ssl and unsanitized data provided by the client may appear in log files.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
Version: 2.4 ≤ 2.4.63 |
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CVE-2024-43394 (GCVE-0-2024-43394)
Vulnerability from nvd
Published
2025-07-10 16:56
Modified
2025-11-04 21:08
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Summary
Server-Side Request Forgery (SSRF) in Apache HTTP Server on Windows allows to potentially leak NTLM hashes to a malicious server via
mod_rewrite or apache expressions that pass unvalidated request input.
This issue affects Apache HTTP Server: from 2.4.0 through 2.4.63.
Note: The Apache HTTP Server Project will be setting a higher bar for accepting vulnerability reports regarding SSRF via UNC paths.
The server offers limited protection against administrators directing the server to open UNC paths.
Windows servers should limit the hosts they will connect over via SMB based on the nature of NTLM authentication.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
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CVE-2024-43204 (GCVE-0-2024-43204)
Vulnerability from nvd
Published
2025-07-10 16:54
Modified
2025-11-04 21:08
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Summary
SSRF in Apache HTTP Server with mod_proxy loaded allows an attacker to send outbound proxy requests to a URL controlled by the attacker. Requires an unlikely configuration where mod_headers is configured to modify the Content-Type request or response header with a value provided in the HTTP request.
Users are recommended to upgrade to version 2.4.64 which fixes this issue.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
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CVE-2024-42516 (GCVE-0-2024-42516)
Vulnerability from nvd
Published
2025-07-10 16:53
Modified
2025-11-04 21:08
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-20 - Improper Input Validation
Summary
HTTP response splitting in the core of Apache HTTP Server allows an attacker who can manipulate the Content-Type response headers of applications hosted or proxied by the server can split the HTTP response.
This vulnerability was described as CVE-2023-38709 but the patch included in Apache HTTP Server 2.4.59 did not address the issue.
Users are recommended to upgrade to version 2.4.64, which fixes this issue.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
Version: 2.4.0 ≤ 2.4.63 |
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CVE-2024-39573 (GCVE-0-2024-39573)
Vulnerability from nvd
Published
2024-07-01 18:16
Modified
2025-11-03 21:56
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-20 - Improper Input Validation
Summary
Potential SSRF in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows an attacker to cause unsafe RewriteRules to unexpectedly setup URL's to be handled by mod_proxy.
Users are recommended to upgrade to version 2.4.60, which fixes this issue.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
Version: 2.4.0 ≤ 2.4.59 |
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CVE-2024-38477 (GCVE-0-2024-38477)
Vulnerability from nvd
Published
2024-07-01 18:16
Modified
2025-11-03 21:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-476 - NULL Pointer Dereference
Summary
null pointer dereference in mod_proxy in Apache HTTP Server 2.4.59 and earlier allows an attacker to crash the server via a malicious request.
Users are recommended to upgrade to version 2.4.60, which fixes this issue.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
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CVE-2024-38476 (GCVE-0-2024-38476)
Vulnerability from nvd
Published
2024-07-01 18:15
Modified
2025-11-03 21:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-829 - Inclusion of Functionality from Untrusted Control Sphere
Summary
Vulnerability in core of Apache HTTP Server 2.4.59 and earlier are vulnerably to information disclosure, SSRF or local script execution via backend applications whose response headers are malicious or exploitable.
Users are recommended to upgrade to version 2.4.60, which fixes this issue.
References
Impacted products
| Vendor | Product | Version | ||
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| Apache Software Foundation | Apache HTTP Server |
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CVE-2024-38475 (GCVE-0-2024-38475)
Vulnerability from nvd
Published
2024-07-01 18:15
Modified
2025-11-03 21:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-116 - Improper Encoding or Escaping of Output
Summary
Improper escaping of output in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows an attacker to map URLs to filesystem locations that are permitted to be served by the server but are not intentionally/directly reachable by any URL, resulting in code execution or source code disclosure.
Substitutions in server context that use a backreferences or variables as the first segment of the substitution are affected. Some unsafe RewiteRules will be broken by this change and the rewrite flag "UnsafePrefixStat" can be used to opt back in once ensuring the substitution is appropriately constrained.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
Version: 2.4.0 ≤ 2.4.59 |
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CVE-2024-36387 (GCVE-0-2024-36387)
Vulnerability from nvd
Published
2024-07-01 18:10
Modified
2025-02-13 17:52
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-476 - NULL Pointer Dereference
Summary
Serving WebSocket protocol upgrades over a HTTP/2 connection could result in a Null Pointer dereference, leading to a crash of the server process, degrading performance.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
Version: 2.4.55 ≤ 2.4.59 |
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CVE-2024-27316 (GCVE-0-2024-27316)
Vulnerability from nvd
Published
2024-04-04 19:21
Modified
2025-11-04 22:06
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Summary
HTTP/2 incoming headers exceeding the limit are temporarily buffered in nghttp2 in order to generate an informative HTTP 413 response. If a client does not stop sending headers, this leads to memory exhaustion.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
Version: 2.4.17 ≤ 2.4.58 |
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CVE-2023-38709 (GCVE-0-2023-38709)
Vulnerability from nvd
Published
2024-04-04 19:19
Modified
2025-11-04 21:08
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- HTTP response splitting
Summary
Faulty input validation in the core of Apache allows malicious or exploitable backend/content generators to split HTTP responses.
This issue affects Apache HTTP Server: through 2.4.58.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
Version: 0 ≤ 2.4.58 |
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CVE-2025-54090 (GCVE-0-2025-54090)
Vulnerability from cvelistv5
Published
2025-07-23 13:19
Modified
2025-11-04 21:12
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-253 - Incorrect Check of Function Return Value
Summary
A bug in Apache HTTP Server 2.4.64 results in all "RewriteCond expr ..." tests evaluating as "true".
Users are recommended to upgrade to version 2.4.65, which fixes the issue.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
Version: 2.4.64 ≤ |
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CVE-2025-53020 (GCVE-0-2025-53020)
Vulnerability from cvelistv5
Published
2025-07-10 16:59
Modified
2025-11-04 21:11
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Summary
Late Release of Memory after Effective Lifetime vulnerability in Apache HTTP Server.
This issue affects Apache HTTP Server: from 2.4.17 up to 2.4.63.
Users are recommended to upgrade to version 2.4.64, which fixes the issue.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
Version: 2.4.17 ≤ 2.4.63 |
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CVE-2025-49812 (GCVE-0-2025-49812)
Vulnerability from cvelistv5
Published
2025-07-10 16:58
Modified
2025-11-04 21:11
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-287 - Improper Authentication
Summary
In some mod_ssl configurations on Apache HTTP Server versions through to 2.4.63, an HTTP desynchronisation attack allows a man-in-the-middle attacker to hijack an HTTP session via a TLS upgrade.
Only configurations using "SSLEngine optional" to enable TLS upgrades are affected. Users are recommended to upgrade to version 2.4.64, which removes support for TLS upgrade.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
Version: 0 ≤ 2.4.63 |
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CVE-2025-49630 (GCVE-0-2025-49630)
Vulnerability from cvelistv5
Published
2025-07-10 16:57
Modified
2025-11-04 21:11
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-617 - Reachable Assertion
Summary
In certain proxy configurations, a denial of service attack against Apache HTTP Server versions 2.4.26 through to 2.4.63 can be triggered by untrusted clients causing an assertion in mod_proxy_http2.
Configurations affected are a reverse proxy is configured for an HTTP/2 backend, with ProxyPreserveHost set to "on".
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
Version: 2.4.26 ≤ 2.4.63 |
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CVE-2025-23048 (GCVE-0-2025-23048)
Vulnerability from cvelistv5
Published
2025-07-10 16:56
Modified
2025-11-04 21:09
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-284 - Improper Access Control
Summary
In some mod_ssl configurations on Apache HTTP Server 2.4.35 through to 2.4.63, an access control bypass by trusted clients is possible using TLS 1.3 session resumption.
Configurations are affected when mod_ssl is configured for multiple virtual hosts, with each restricted to a different set of trusted client certificates (for example with a different SSLCACertificateFile/Path setting). In such a case, a client trusted to access one virtual host may be able to access another virtual host, if SSLStrictSNIVHostCheck is not enabled in either virtual host.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
Version: 2.4.35 ≤ 2.4.63 |
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CVE-2024-43394 (GCVE-0-2024-43394)
Vulnerability from cvelistv5
Published
2025-07-10 16:56
Modified
2025-11-04 21:08
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Summary
Server-Side Request Forgery (SSRF) in Apache HTTP Server on Windows allows to potentially leak NTLM hashes to a malicious server via
mod_rewrite or apache expressions that pass unvalidated request input.
This issue affects Apache HTTP Server: from 2.4.0 through 2.4.63.
Note: The Apache HTTP Server Project will be setting a higher bar for accepting vulnerability reports regarding SSRF via UNC paths.
The server offers limited protection against administrators directing the server to open UNC paths.
Windows servers should limit the hosts they will connect over via SMB based on the nature of NTLM authentication.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
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CVE-2024-47252 (GCVE-0-2024-47252)
Vulnerability from cvelistv5
Published
2025-07-10 16:55
Modified
2025-11-04 21:08
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-150 - Improper Neutralization of Escape, Meta, or Control Sequences
Summary
Insufficient escaping of user-supplied data in mod_ssl in Apache HTTP Server 2.4.63 and earlier allows an untrusted SSL/TLS client to insert escape characters into log files in some configurations.
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References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
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CVE-2024-43204 (GCVE-0-2024-43204)
Vulnerability from cvelistv5
Published
2025-07-10 16:54
Modified
2025-11-04 21:08
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Summary
SSRF in Apache HTTP Server with mod_proxy loaded allows an attacker to send outbound proxy requests to a URL controlled by the attacker. Requires an unlikely configuration where mod_headers is configured to modify the Content-Type request or response header with a value provided in the HTTP request.
Users are recommended to upgrade to version 2.4.64 which fixes this issue.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
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CVE-2024-42516 (GCVE-0-2024-42516)
Vulnerability from cvelistv5
Published
2025-07-10 16:53
Modified
2025-11-04 21:08
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-20 - Improper Input Validation
Summary
HTTP response splitting in the core of Apache HTTP Server allows an attacker who can manipulate the Content-Type response headers of applications hosted or proxied by the server can split the HTTP response.
This vulnerability was described as CVE-2023-38709 but the patch included in Apache HTTP Server 2.4.59 did not address the issue.
Users are recommended to upgrade to version 2.4.64, which fixes this issue.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
Version: 2.4.0 ≤ 2.4.63 |
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CVE-2024-39573 (GCVE-0-2024-39573)
Vulnerability from cvelistv5
Published
2024-07-01 18:16
Modified
2025-11-03 21:56
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-20 - Improper Input Validation
Summary
Potential SSRF in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows an attacker to cause unsafe RewriteRules to unexpectedly setup URL's to be handled by mod_proxy.
Users are recommended to upgrade to version 2.4.60, which fixes this issue.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
Version: 2.4.0 ≤ 2.4.59 |
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CVE-2024-38477 (GCVE-0-2024-38477)
Vulnerability from cvelistv5
Published
2024-07-01 18:16
Modified
2025-11-03 21:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-476 - NULL Pointer Dereference
Summary
null pointer dereference in mod_proxy in Apache HTTP Server 2.4.59 and earlier allows an attacker to crash the server via a malicious request.
Users are recommended to upgrade to version 2.4.60, which fixes this issue.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
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CVE-2024-38476 (GCVE-0-2024-38476)
Vulnerability from cvelistv5
Published
2024-07-01 18:15
Modified
2025-11-03 21:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-829 - Inclusion of Functionality from Untrusted Control Sphere
Summary
Vulnerability in core of Apache HTTP Server 2.4.59 and earlier are vulnerably to information disclosure, SSRF or local script execution via backend applications whose response headers are malicious or exploitable.
Users are recommended to upgrade to version 2.4.60, which fixes this issue.
References
Impacted products
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|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
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CVE-2024-38475 (GCVE-0-2024-38475)
Vulnerability from cvelistv5
Published
2024-07-01 18:15
Modified
2025-11-03 21:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-116 - Improper Encoding or Escaping of Output
Summary
Improper escaping of output in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows an attacker to map URLs to filesystem locations that are permitted to be served by the server but are not intentionally/directly reachable by any URL, resulting in code execution or source code disclosure.
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References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
Version: 2.4.0 ≤ 2.4.59 |
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CVE-2024-27316 (GCVE-0-2024-27316)
Vulnerability from cvelistv5
Published
2024-04-04 19:21
Modified
2025-11-04 22:06
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Summary
HTTP/2 incoming headers exceeding the limit are temporarily buffered in nghttp2 in order to generate an informative HTTP 413 response. If a client does not stop sending headers, this leads to memory exhaustion.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
Version: 2.4.17 ≤ 2.4.58 |
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