Common Weakness Enumeration
CWE-625
AllowedPermissive Regular Expression
Abstraction: Base · Status: Draft
The product uses a regular expression that does not sufficiently restrict the set of allowed values.
38 vulnerabilities reference this CWE, most recent first.
CVE-2026-34830 (GCVE-0-2026-34830)
Vulnerability from cvelistv5 – Published: 2026-04-02 16:47 – Updated: 2026-04-02 18:59
VLAI
EPSS
VEX
Title
Rack: Rack::Sendfile regex injection via HTTP_X_ACCEL_MAPPING header allows arbitrary file reads through nginx
Summary
Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Sendfile#map_accel_path interpolates the value of the X-Accel-Mapping request header directly into a regular expression when rewriting file paths for X-Accel-Redirect. Because the header value is not escaped, an attacker who can supply X-Accel-Mapping to the backend can inject regex metacharacters and control the generated X-Accel-Redirect response header. In deployments using Rack::Sendfile with x-accel-redirect, this can allow an attacker to cause nginx to serve unintended files from configured internal locations. This issue has been patched in versions 2.2.23, 3.1.21, and 3.2.6.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-02 18:59 UTC
CWE
- CWE-625 - Permissive Regular Expression
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/rack/rack/security/advisories/… | x_refsource_CONFIRM |
Impacted products
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CVE-2026-34763 (GCVE-0-2026-34763)
Vulnerability from cvelistv5 – Published: 2026-04-02 16:43 – Updated: 2026-04-02 17:41
VLAI
EPSS
VEX
Title
Rack: Rack::Directory info disclosure and DoS via unescaped regex interpolation
Summary
Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Directory interpolates the configured root path directly into a regular expression when deriving the displayed directory path. If root contains regex metacharacters such as +, *, or ., the prefix stripping can fail and the generated directory listing may expose the full filesystem path in the HTML output. This issue has been patched in versions 2.2.23, 3.1.21, and 3.2.6.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-02 17:41 UTC
CWE
- CWE-625 - Permissive Regular Expression
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/rack/rack/security/advisories/… | x_refsource_CONFIRM |
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CVE-2026-32973 (GCVE-0-2026-32973)
Vulnerability from cvelistv5 – Published: 2026-03-29 12:44 – Updated: 2026-06-23 16:15
VLAI
EPSS
VEX
Title
OpenClaw < 2026.3.11 - Exec Allowlist Pattern Overmatch via POSIX Path Normalization
Summary
OpenClaw before 2026.3.11 contains an exec allowlist bypass vulnerability where matchesExecAllowlistPattern improperly normalizes patterns with lowercasing and glob matching that overmatches on POSIX paths. Attackers can exploit the ? wildcard matching across path segments to execute commands or paths not intended by operators.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-30 14:12 UTC
CWE
- CWE-625 - Permissive Regular Expression
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/openclaw/openclaw/security/adv… | vendor-advisory |
| https://www.vulncheck.com/advisories/openclaw-exe… | third-party-advisory |
Impacted products
Date Public
2026-03-13 00:00
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CVE-2026-23651 (GCVE-0-2026-23651)
Vulnerability from cvelistv5 – Published: 2026-03-05 22:18 – Updated: 2026-06-19 18:17 Exclusively Hosted Service
VLAI
EPSS
VEX
Title
Microsoft ACI Confidential Containers Elevation of Privilege Vulnerability
Summary
Permissive regular expression in Azure Compute Gallery allows an authorized attacker to elevate privileges locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-09 18:20 UTC
CWE
- CWE-625 - Permissive Regular Expression
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft ACI Confidential Containers |
Affected:
-
cpe:2.3:a:microsoft:microsoft_aci_confidential_containers:*:*:*:*:*:*:*:* |
Date Public
2026-03-05 16:00
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CVE-2026-19278 (GCVE-0-2026-19278)
Vulnerability from cvelistv5 – Published: 2026-08-10 12:13 – Updated: 2026-08-11 06:25
VLAI
EPSS
VEX
Title
Stackrox: stackrox: privilege escalation via unanchored regular expressions in auth m2m role mappings
Summary
A flaw was found in StackRox/RHACS Central's Auth Machine-to-Machine (M2M) token exchange. When an administrator configures M2M role mappings, the system uses unanchored regular expressions for matching claim values. This allows an attacker with a valid OpenID Connect (OIDC) token, whose claim value is a superstring of a configured pattern, to gain unauthorized access to roles they were not intended to receive. This can lead to privilege escalation within the system.
Severity
6.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-10 18:09 UTC
CWE
- CWE-625 - Permissive Regular Expression
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-19278 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2512524 | issue-trackingx_refsource_REDHAT |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Advanced Cluster Security 4 |
cpe:/a:redhat:advanced_cluster_security:4
|
Date Public
2026-08-07 09:41
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CVE-2026-14814 (GCVE-0-2026-14814)
Vulnerability from cvelistv5 – Published: 2026-10-13 01:08 – Updated: 2026-10-14 10:51
VLAI
EPSS
VEX
Title
Permissive Regular Expression in GitLab
Summary
GitLab has remediated an issue in GitLab CE/EE affecting all versions before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed a user to poison cached responses for raw repository files, causing targeted users' CI/CD pipelines to execute specially crafted content and potentially exposing protected environment variables, due to improper validation of repository references.
Severity
8.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-14 03:59 UTC
CWE
- CWE-625 - Permissive Regular Expression
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://gitlab.com/gitlab-org/gitlab/-/work_items… | |
| https://hackerone.com/reports/3832707 | technical-descriptionexploitpermissions-required |
| https://docs.gitlab.com/releases/patches/patch-re… |
Impacted products
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CVE-2023-6544 (GCVE-0-2023-6544)
Vulnerability from cvelistv5 – Published: 2024-04-25 15:58 – Updated: 2025-11-11 15:57
VLAI
EPSS
VEX
Title
Keycloak: authorization bypass
Summary
A flaw was found in the Keycloak package. This issue occurs due to a permissive regular expression hardcoded for filtering which allows hosts to register a dynamic client. A malicious user with enough information about the environment could jeopardize an environment with this specific Dynamic Client Registration and TrustedDomain configuration previously unauthorized.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-04-25 19:19 UTC
CWE
- CWE-625 - Permissive Regular Expression
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2024:1860 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2024:1861 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2024:1862 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2024:1864 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2024:1866 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2024:1867 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2024:1868 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2023-6544 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2253116 | issue-trackingx_refsource_REDHAT |
Impacted products
10 products
| Vendor | Product | Version | |
|---|---|---|---|
|
Affected:
22.0.0 , < 22.0.10
(semver)
Affected: 23.0.0 , < 24.0.3 (semver) |
|||
| Red Hat | Red Hat build of Keycloak 22 |
Unaffected:
22.0.10-1 , < *
(rpm)
cpe:/a:redhat:build_keycloak:22::el9 |
|
| Red Hat | Red Hat build of Keycloak 22 |
Unaffected:
22-13 , < *
(rpm)
cpe:/a:redhat:build_keycloak:22::el9 |
|
| Red Hat | Red Hat build of Keycloak 22 |
Unaffected:
22-16 , < *
(rpm)
cpe:/a:redhat:build_keycloak:22::el9 |
|
| Red Hat | Red Hat build of Keycloak 22.0.10 |
cpe:/a:redhat:build_keycloak:22
|
|
| Red Hat | Red Hat Single Sign-On 7.6 for RHEL 7 |
Unaffected:
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(rpm)
cpe:/a:redhat:red_hat_single_sign_on:7.6::el7 |
|
| Red Hat | Red Hat Single Sign-On 7.6 for RHEL 8 |
Unaffected:
0:18.0.13-1.redhat_00001.1.el8sso , < *
(rpm)
cpe:/a:redhat:red_hat_single_sign_on:7.6::el8 |
|
| Red Hat | Red Hat Single Sign-On 7.6 for RHEL 9 |
Unaffected:
0:18.0.13-1.redhat_00001.1.el9sso , < *
(rpm)
cpe:/a:redhat:red_hat_single_sign_on:7.6::el9 |
|
| Red Hat | RHEL-8 based Middleware Containers |
Unaffected:
7.6-46 , < *
(rpm)
cpe:/a:redhat:rhosemc:1.0::el8 |
|
| Red Hat | RHSSO 7.6.8 |
cpe:/a:redhat:red_hat_single_sign_on:7.6
|
Date Public
2024-04-16 00:00
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CVE-2020-8910 (GCVE-0-2020-8910)
Vulnerability from cvelistv5 – Published: 2020-03-26 11:38 – Updated: 2024-08-04 10:12
VLAI
EPSS
VEX
Title
Auth Bypass in Google's Closure-Library
Summary
A URL parsing issue in goog.uri of the Google Closure Library versions up to and including v20200224 allows an attacker to send malicious URLs to be parsed by the library and return the wrong authority. Mitigation: update your library to version v20200315.
Severity
6.5 (Medium)
CWE
- CWE-625 - cwe-625
- Bad URL parsing
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/google/closure-library/commit/… | x_refsource_CONFIRM |
| https://github.com/google/closure-library/release… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Closure-Library |
Affected:
v20200224 , ≤ v20200224
(custom)
|
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CVE-2018-8926 (GCVE-0-2018-8926)
Vulnerability from cvelistv5 – Published: 2018-06-08 13:00 – Updated: 2024-09-16 19:04
VLAI
EPSS
VEX
Summary
Permissive regular expression vulnerability in synophoto_dsm_user in Synology Photo Station before 6.8.5-3471 and before 6.3-2975 allows remote authenticated users to conduct privilege escalation attacks via the fullname parameter.
Severity
8.8 (High)
CWE
- CWE-625 - Permissive Regular Expression (CWE-625)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.synology.com/zh-tw/support/security/S… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Synology | Photo Station |
Affected:
unspecified , < 6.8.5-3471
(custom)
Affected: unspecified , < 6.3-2975 (custom) |
Date Public
2018-06-08 00:00
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GHSA-24QX-W28J-9M6P
Vulnerability from github – Published: 2026-05-05 16:54 – Updated: 2026-07-31 20:27
VLAI
Summary
Jupyter Server has a CORS Origin Validation Bypass via `re.match()` in `allow_origin_pat`
Details
Jupyter Server uses re.match() to validate the Origin header against the allow_origin_pat configuration.
Since re.match() only anchors at the start of the string, an attacker who controls a domain like http://trusted.example.com.evil.com/ passes validation against a pattern intended to match only trusted.example.com.
Impact
<=2.17.0
Patches
057869a327c46730afede3eab0ca2d2e3e74acea, 49b34392feaa97735b3b777e3baf8f22f2a14ed8
Workarounds
Wrap your allow_origin_pat value with ^ and $
References
https://github.com/jupyter-server/jupyter_server/pull/603 https://docs.python.org/3/library/re.html#re.fullmatch https://docs.python.org/3/library/re.html#re.match
Severity
{
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"database_specific": {
"last_known_affected_version_range": "\u003c= 2.17.0"
},
"package": {
"ecosystem": "PyPI",
"name": "jupyter-server"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.18.0"
}
],
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}
]
}
],
"aliases": [
"CVE-2026-40110"
],
"database_specific": {
"cwe_ids": [
"CWE-625",
"CWE-777"
],
"github_reviewed": true,
"github_reviewed_at": "2026-05-05T16:54:31Z",
"nvd_published_at": "2026-05-05T22:16:00Z",
"severity": "HIGH"
},
"details": "Jupyter Server uses `re.match()` to validate the Origin header against the `allow_origin_pat` configuration.\n\nSince `re.match()` only anchors at the start of the string, an attacker who controls a domain like `http://trusted.example.com.evil.com/` passes validation against a pattern intended to match only `trusted.example.com`.\n\n### Impact\n\n\u003c=2.17.0\n\n### Patches\n\n057869a327c46730afede3eab0ca2d2e3e74acea, 49b34392feaa97735b3b777e3baf8f22f2a14ed8 \n\n### Workarounds\n\nWrap your `allow_origin_pat` value with `^` and `$`\n\n### References\n\nhttps://github.com/jupyter-server/jupyter_server/pull/603\nhttps://docs.python.org/3/library/re.html#re.fullmatch\nhttps://docs.python.org/3/library/re.html#re.match",
"id": "GHSA-24qx-w28j-9m6p",
"modified": "2026-07-31T20:27:11Z",
"published": "2026-05-05T16:54:31Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/jupyter-server/jupyter_server/security/advisories/GHSA-24qx-w28j-9m6p"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40110"
},
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"url": "https://github.com/jupyter-server/jupyter_server/pull/603"
},
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"url": "https://access.redhat.com/errata/RHSA-2026:43038"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-40110"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2466912"
},
{
"type": "PACKAGE",
"url": "https://github.com/jupyter-server/jupyter_server"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/jupyter-server/PYSEC-2026-2187.yaml"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40110.json"
}
],
"schema_version": "1.4.0",
"severity": [
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"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:L/SC:L/SI:L/SA:L",
"type": "CVSS_V4"
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}
Mitigation
Implementation
When applicable, ensure that the regular expression marks beginning and ending string patterns, such as "/^string$/" for Perl.
No CAPEC attack patterns related to this CWE.