Common Weakness Enumeration
CWE-790
Weakness Allowed-with-ReviewImproper Filtering of Special Elements
Abstraction: Class · Status: Incomplete
The product receives data from an upstream component, but it does not filter or incorrectly filters special elements before sending it to a downstream component.
Mapping guidance
This CWE entry is a Class and might have Base-level children that would be more appropriate
Examine children of this entry to see if there is a better fit
Modes of introduction
Implementation
REALIZATION: This weakness is caused during implementation of an architectural security tactic.
Content history
Submission: CWE Content Team
· MITRE
· 2009-12-04
· CWE 1.7
Modification: CWE Content Team
· MITRE
· 2010-02-16
· CWE 1.8
updated Demonstrative_Examples
Modification: CWE Content Team
· MITRE
· 2011-06-01
· CWE 1.13
updated Common_Consequences
Modification: CWE Content Team
· MITRE
· 2011-06-27
· CWE 2.0
updated Common_Consequences
Modification: CWE Content Team
· MITRE
· 2017-01-19
· CWE 2.10
updated Relationships
Modification: CWE Content Team
· MITRE
· 2017-11-08
· CWE 3.0
updated Modes_of_Introduction, Relationships
Modification: CWE Content Team
· MITRE
· 2020-02-24
· CWE 4.0
updated Relationships
Modification: CWE Content Team
· MITRE
· 2023-01-31
· CWE 4.10
updated Description
Modification: CWE Content Team
· MITRE
· 2023-04-27
· CWE 4.11
updated Relationships
Modification: CWE Content Team
· MITRE
· 2023-06-29
· CWE 4.12
updated Mapping_Notes
Modification: CWE Content Team
· MITRE
· 2025-12-11
· CWE 4.19
updated Applicable_Platforms, Weakness_Ordinalities
Modification: CWE Content Team
· MITRE
· 2026-10-28
· CWE 5.0
updated Description, Relationships
25 vulnerabilities reference this CWE, most recent first.
CVE-2026-11331 (GCVE-0-2026-11331)
Vulnerability from cvelistv5 – Published: 2026-07-22 14:10 – Updated: 2026-07-22 18:54
VLAI
EPSS
VEX
Title
Potential wildcard CNAME RPZ policy bypass
Summary
An attacker who knows (or guesses) that a resolver uses RPZ with wildcard CNAME policies can craft query names long enough to trigger a NAMETOOLONG error condition during RPZ processing. This is not handled correctly and may lead to defeating the RPZ rule. It also may lead to an unexpected exit of the BIND 9 software.
This issue affects BIND 9 versions 9.16.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.16.8-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-22 18:54 UTC
CWE
- CWE-790 - Improper Filtering of Special Elements
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-11331 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.26 | patch |
| https://downloads.isc.org/isc/bind9/9.21.24 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.16.0 , ≤ 9.18.50
(custom)
Affected: 9.20.0 , ≤ 9.20.24 (custom) Affected: 9.21.0 , ≤ 9.21.23 (custom) Affected: 9.16.8-S1 , ≤ 9.18.50-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.24-S1 (custom) cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* |
Date Public
2026-07-22 00:00
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CVE-2026-9658 (GCVE-0-2026-9658)
Vulnerability from cvelistv5 – Published: 2026-05-28 11:36 – Updated: 2026-06-01 18:00
VLAI
EPSS
VEX
Title
Plack::Middleware::Security::Common versions before 0.13.1 for Perl did not block header injections in request paths
Summary
Plack::Middleware::Security::Common versions before 0.13.1 for Perl did not block header injections in request paths.
The header injection rule was ineffective at blocking header injections in the request paths unless they were double-encoded, for example,
GET /path\r\nHTTP/1.1\r\nHost: secret.example.com
Note that it is unclear whether request paths with CRLF followed by additional headers would be blocked by reverse proxies, or how they would be processed by Plack-based servers.
Severity
7.3 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-01 18:00 UTC
CWE
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| RRWO | Plack::Middleware::Security::Common |
Affected:
0 , < 0.13.1
(custom)
|
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CVE-2026-2328 (GCVE-0-2026-2328)
Vulnerability from cvelistv5 – Published: 2026-03-30 06:55 – Updated: 2026-03-30 18:08
VLAI
EPSS
VEX
Title
Backend Access Due to Insufficient Input Validation
Summary
An unauthenticated remote attacker can exploit insufficient input validation to access backend components beyond their intended scope via path traversal, resulting in exposure of sensitive information.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-30 18:07 UTC
CWE
- CWE-790 - Improper Filtering of Special Elements
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| WAGO | Device Sphere |
Affected:
0.0.0 , < 1.2.2
(semver)
|
|
| WAGO | Solution Builder |
Affected:
0.0.0 , < 2.4.2
(semver)
|
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CVE-2025-27260 (GCVE-0-2025-27260)
Vulnerability from cvelistv5 – Published: 2026-03-25 12:54 – Updated: 2026-03-25 13:50
VLAI
EPSS
VEX
Title
Ericsson Indoor Connect 8855 - Improper Filtering of Special Elements Vulnerability
Summary
Ericsson
Indoor Connect 8855 versions prior to 2025.Q3 contains an Improper Filtering of Special
Elements vulnerability which, if exploited, can lead to unauthorized
modification of certain information
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-25 13:50 UTC
CWE
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Ericsson | Indoor Connect 8855 |
Affected:
0 , < 2025.Q3
(custom)
|
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CVE-2025-15576 (GCVE-0-2025-15576)
Vulnerability from cvelistv5 – Published: 2026-03-09 11:54 – Updated: 2026-03-10 18:56
VLAI
EPSS
VEX
Title
Jail chroot escape via fd exchange with a different jail
Summary
If two sibling jails are restricted to separate filesystem trees, which is to say that neither of the two jail root directories is an ancestor of the other, jailed processes may nonetheless be able to access a shared directory via a nullfs mount, if the administrator has configured one.
In this case, cooperating processes in the two jails may establish a connection using a unix domain socket and exchange directory descriptors with each other.
When performing a filesystem name lookup, at each step of the lookup, the kernel checks whether the lookup would descend below the jail root of the current process. If the jail root directory is not encountered, the lookup continues.
In a configuration where processes in two different jails are able to exchange file descriptors using a unix domain socket, it is possible for a jailed process to receive a directory for a descriptor that is below that process' jail root. This enables full filesystem access for a jailed process, breaking the chroot.
Note that the system administrator is still responsible for ensuring that an unprivileged user on the jail host is not able to pass directory descriptors to a jailed process, even in a patched kernel.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-10 18:56 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://security.freebsd.org/advisories/FreeBSD-S… | vendor-advisory |
Impacted products
Date Public
2026-02-24 17:00
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CVE-2025-0431 (GCVE-0-2025-0431)
Vulnerability from cvelistv5 – Published: 2025-03-19 16:18 – Updated: 2025-03-19 17:38
VLAI
EPSS
VEX
Title
Enterprise Protection Backslash URL Rewrite Bypass
Summary
Enterprise Protection contains a vulnerability in URL rewriting that allows an unauthenticated remote attacker to send an email which bypasses URL protections impacting the integrity of recipient's email. This occurs due to improper filtering of backslashes within URLs and affects all versions of 8.21, 8.20 and 8.18 prior to 8.21.0 patch 5115, 8.20.6 patch 5114 and 8.18.6 patch 5113 respectively.
Severity
5.8 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-03-19 17:37 UTC
CWE
- CWE-790 - Improper Filtering of Special Elements
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Proofpoint | Enterprise Protection |
Affected:
8.18.6 , < patch 5113
(semver)
Affected: 8.20.6 , < patch 5114 (semver) Affected: 8.21.0 , < patch 5115 (semver) |
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CVE-2024-47984 (GCVE-0-2024-47984)
Vulnerability from cvelistv5 – Published: 2024-12-13 14:15 – Updated: 2024-12-13 20:38
VLAI
EPSS
VEX
Summary
Dell RecoverPoint for Virtual Machines 6.0.x contains Denial of Service vulnerability. A User with Remote access could potentially exploit this vulnerability, leading to the disruption of most functionalities of the RPA persistent after reboot, resulting in need of technical support intervention in getting system back to stable state.
Severity
4.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-12-13 19:07 UTC
CWE
- CWE-790 - Improper Filtering of Special Elements
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.dell.com/support/kbdoc/en-us/00025976… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Dell | RecoverPoint for Virtual Machines |
Affected:
6.0 SP1
Affected: 6.0 SP1 P1 |
Date Public
2024-12-12 18:30
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CVE-2024-43443 (GCVE-0-2024-43443)
Vulnerability from cvelistv5 – Published: 2024-08-26 08:42 – Updated: 2024-08-26 14:55
VLAI
EPSS
VEX
Title
Stored XSS in process management
Summary
Improper Neutralization of Input done by an attacker with admin privileges ('Cross-site Scripting') in Process Management modules of OTRS and ((OTRS)) Community Edition allows Cross-Site Scripting (XSS) within the Process Management targeting other admins.
This issue affects:
* OTRS from 7.0.X through 7.0.50
* OTRS 8.0.X
* OTRS 2023.X
* OTRS from 2024.X through 2024.5.X
* ((OTRS)) Community Edition: 6.0.x
Products based on the ((OTRS)) Community Edition also very likely to be affected
Severity
4.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-08-26 14:55 UTC
CWE
- CWE-790 - Improper Filtering of Special Elements
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| OTRS AG | OTRS |
Affected:
7.0.x , ≤ 7.0.50
(Patch)
Affected: 8.0.x Affected: 2023.x Affected: 2024.x , ≤ 2024.5.x (Patch) |
|
| OTRS AG | ((OTRS)) Community Edition |
Affected:
6.0.x
|
Date Public
2024-08-26 08:00
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CVE-2024-43442 (GCVE-0-2024-43442)
Vulnerability from cvelistv5 – Published: 2024-08-26 08:42 – Updated: 2024-08-26 15:27
VLAI
EPSS
VEX
Title
Stored XSS in System Configuration
Summary
Improper Neutralization of Input done by an attacker with admin privileges ('Cross-site Scripting') in OTRS (System Configuration modules) and ((OTRS)) Community Edition allows Cross-Site Scripting (XSS) within the System Configuration targeting other admins.
This issue affects:
* OTRS from 7.0.X through 7.0.50
* OTRS 8.0.X
* OTRS 2023.X
* OTRS from 2024.X through 2024.5.X
* ((OTRS)) Community Edition: 6.0.x
Products based on the ((OTRS)) Community Edition also very likely to be affected
Severity
4.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-08-26 15:26 UTC
CWE
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| OTRS AG | OTRS |
Affected:
7.0.x , ≤ 7.0.50
(Patch)
Affected: 8.0.x Affected: 2023.x Affected: 2024.x , ≤ 2024.5.x (Patch) |
|
| OTRS AG | ((OTRS)) Community Edition |
Affected:
6.0.x
|
Date Public
2024-08-26 08:00
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CVE-2024-42416 (GCVE-0-2024-42416)
Vulnerability from cvelistv5 – Published: 2024-09-05 04:31 – Updated: 2025-11-04 16:13
VLAI
EPSS
VEX
Title
Multiple issues in ctl(4) CAM Target Layer
Summary
The ctl_report_supported_opcodes function did not sufficiently validate a field provided by userspace, allowing an arbitrary write to a limited amount of kernel help memory.
Malicious software running in a guest VM that exposes virtio_scsi can exploit the vulnerabilities to achieve code execution on the host in the bhyve userspace process, which typically runs as root. Note that bhyve runs in a Capsicum sandbox, so malicious code is constrained by the capabilities available to the bhyve process. A malicious iSCSI initiator could achieve remote code execution on the iSCSI target host.
Severity
8.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-05 13:11 UTC
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://security.freebsd.org/advisories/FreeBSD-S… | vendor-advisory |
| https://security.netapp.com/advisory/ntap-2024092… |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| FreeBSD | FreeBSD |
Affected:
14.1-RELEASE , < p4
(release)
Affected: 14.0-RELEASE , < p10 (release) Affected: 13.3-RELEASE , < p6 (release) |
|
| freebsd | freebsd |
Affected:
14.1 , < 14.1_p4
(custom)
Affected: 14.0 , < 14.0_p10 (custom) Affected: 13.3 , < 13.3_p6 (custom) cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:* |
Date Public
2024-09-04 23:37
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No mitigation information available for this CWE.
No CAPEC attack patterns related to this CWE.