Common Weakness Enumeration

CWE-185

Allowed-with-Review

Incorrect Regular Expression

Abstraction: Class · Status: Draft

API response cwe.mitre.org

The product specifies a regular expression in a way that causes data to be improperly matched or compared.

83 vulnerabilities reference this CWE, most recent first.

CVE-2026-114653 (GCVE-0-2026-114653)

Vulnerability from cvelistv5 – Published: 2026-10-22 19:13 – Updated: 2026-10-22 21:25
VLAI
Title
Silent client-side encryption bypass via unescaped field-name regex in CSFLE schema builder
Summary
A client-side encryption schema construction component in the MongoDB C# Driver places caller-supplied field identifiers into a position that is interpreted as a pattern expression, without normalizing or validating them. As a result, an application that designates certain fields for client-side field-level encryption may have the protection silently fail to apply, so data intended to be encrypted is stored and returned in cleartext; conversely, the rule may apply more broadly than intended. No user action is required to cause the condition, and any party with ordinary read access to the stored data — without possession of the encryption keys — can observe the unprotected values.
Severity
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE
  • CWE-185 - Incorrect Regular Expression
Assigner
mongodb CNA under the mitre root
CNA scorecard C 70/100 over 219 records in the last 180 days details
References
Impacted products
Vendor Product Version
MongoDB C# Driver Affected: 3.5.0 , < 3.13.0 (semver)
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Show details on NVD website
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CVE-2026-111755 (GCVE-0-2026-111755)

Vulnerability from cvelistv5 – Published: 2026-10-19 17:27 – Updated: 2026-10-19 18:00
VLAI
Title
follow-redirects sensitiveHeaders regex escaping can expose credential headers
Summary
follow-redirects is a Node.js HTTP and HTTPS client wrapper that automatically follows redirects. From 1.16.0 until 1.16.1, escapeRegex leaves valid header-name metacharacters unescaped in sensitiveHeaders. When an application declares a sensitive header whose name contains ^ or | and follows a cross-origin or HTTPS-to-HTTP redirect, unescaped regular-expression metacharacters prevent the generated filter from matching the declared header name, and the credential header is forwarded to an attacker-controlled redirect target. This issue is fixed in version 1.16.1.
Severity
8.2 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-19 17:59 UTC
CWE
  • CWE-185 - Incorrect Regular Expression
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7797 records in the last 180 days details
References
Impacted products
Vendor Product Version
follow-redirects follow-redirects Affected: >= 1.16.0, < 1.16.1
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-111057 (GCVE-0-2026-111057)

Vulnerability from cvelistv5 – Published: 2026-10-19 16:04 – Updated: 2026-10-19 16:04
VLAI
Title
Mercury: Unauthenticated Remote Code Execution in /api/terminals - access control bypass
Summary
Mercury is a Python framework for sharing Jupyter notebooks as web applications and dashboards. From 3.0.0 until 3.2.4, a missing comma in BLOCKED_PATTERNS concatenates the /lab and /api/terminals regular-expression literals. Requests to /api/terminals therefore bypass the anonymous endpoint blocklist and reach Jupyter Server's terminal API. An unauthenticated attacker can use the resulting interactive operating-system shell to execute commands and access data available to the Mercury process. This issue is fixed in version 3.2.4.
Severity
10 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CWE
  • CWE-185 - Incorrect Regular Expression
  • CWE-284 - Improper Access Control
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7797 records in the last 180 days details
References
Impacted products
Vendor Product Version
mljar mercury Affected: >= 3.0.0, < 3.2.4
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-88021 (GCVE-0-2026-88021)

Vulnerability from cvelistv5 – Published: 2026-09-10 18:58 – Updated: 2026-10-02 14:12
VLAI
Title
Consul vulnerable to an authorization bypass in the Connect service mesh
Summary
Consul and Consul Enterprise are vulnerable to an authorization bypass in the Connect service mesh that may allow a service to reach a destination it is not authorized to access. When building Envoy RBAC rules to enforce Connect intentions, Consul did not correctly escape certain characters in service names, namespaces, and partitions, causing the generated authorization rules to match more broadly than intended. This vulnerability (CVE-2026-88021) is fixed in Consul 2.0.4 and Consul Enterprise 1.21.18, 1.22.12 and 2.0.4.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 19:21 UTC
CWE
  • CWE-185 - Incorrect Regular Expression
Assigner
HashiCorp CNA under the mitre root
CNA scorecard C 70/100 over 46 records in the last 180 days details
References
Impacted products
Vendor Product Version
HashiCorp Consul Affected: 1.9.0 , < 2.0.4 (semver)
Create a notification for this product.
HashiCorp Consul Enterprise Affected: 1.9.0 , < 2.0.4 (semver)
Create a notification for this product.
Credits
This issue was reported to HashiCorp by ThanhDN of MBBank.
Show details on NVD website
To clipboard 

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CVE-2026-73425 (GCVE-0-2026-73425)

Vulnerability from cvelistv5 – Published: 2026-08-12 20:41 – Updated: 2026-08-13 12:56
VLAI
Title
@astrojs/netlify generates an overly-broad Netlify Image CDN allowlist because remotePatterns.pathname metacharacters are not escaped
Summary
Astro is a web framework for content-driven websites. Prior to 8.1.2, the Astro Netlify adapter converts each image.remotePatterns entry into a regular expression written to .netlify/v1/config.json under images.remote_images for Netlify's Image CDN allowlist. In packages/integrations/netlify/src/index.ts, remotePatternToRegex() escapes dots in hostname values but interpolates literal pathname values without escaping regular expression metacharacters such as ., +, ?, (, and [, so a restrictive pathname such as /img/v1.0/file also matches metacharacter-adjacent paths, including paths that cross a segment. Netlify enforces the generated regular expression directly and Astro's matchPattern() helper does not revalidate the request, allowing optimization of images on an already-allowed host that the declared pathname was intended to exclude. This issue is fixed in version 8.1.2.
Severity
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 12:55 UTC
CWE
  • CWE-185 - Incorrect Regular Expression
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7797 records in the last 180 days details
References
Impacted products
Vendor Product Version
withastro astro Affected: < 8.1.2
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-64655 (GCVE-0-2026-64655)

Vulnerability from cvelistv5 – Published: 2026-08-06 18:41 – Updated: 2026-08-08 02:23
VLAI
Title
GitHub CLI: Attestation Verification Bypass via Unescaped Regex Metacharacters in SAN Matching
Summary
GitHub CLI (gh) is GitHub’s official command line tool. Prior to 2.97.0, gh attestation verify  builds the certificate Subject Alternative Name matcher from the --signer-repo and --signer-workflow  flag values without escaping regex metacharacters, so a user-supplied repository or workflow name is treated as a regular expression rather than a literal string. Because GitHub permits characters such as  `.`  in organization, repository, and workflow path names and  `.`  is a regex wildcard, an attacker can register a lookalike name (for example github/artifact.attestations-workflows) that satisfies a matcher intended for a different trusted signer (github/artifact-attestations-workflows), bypassing the intended Sigstore attestation verification. Exploitation requires the attacker to create a plausible lookalike repository and produce valid attestations from it, which could undermine supply chain verification for CI/CD pipelines or policy gates that pin trust to a specific signing workflow. This issue is fixed in version 2.97.0.
Severity
2.1 (Low)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-08 02:23 UTC
CWE
  • CWE-185 - Incorrect Regular Expression
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7797 records in the last 180 days details
References
Impacted products
Vendor Product Version
cli cli Affected: < 2.97.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-56021 (GCVE-0-2026-56021)

Vulnerability from cvelistv5 – Published: 2026-06-18 16:11 – Updated: 2026-06-24 19:54
VLAI
Title
Webmin information disclosure via regex pattern
Summary
Webmin allows unauthenticated attackers to read the contents of any file ending in .conf within module directories, due to a bypassable regex pattern.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · cisa-cg (v2.0.3)
Decision recorded 2026-05-29 20:05 UTC
CWE
  • CWE-185 - Incorrect Regular Expression
  • CWE-777 - Regular Expression without Anchors
Assigner
cisa-cg CNA under the CISA root
CNA scorecard B 76/100 over 132 records in the last 180 days details
References
Impacted products
Vendor Product Version
Webmin Webmin Affected: *
Create a notification for this product.
Date Public
2026-06-18 00:00
Credits
Adem El Adeb, vulone.com/vul1.com
Show details on NVD website
To clipboard 

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CVE-2026-54506 (GCVE-0-2026-54506)

Vulnerability from cvelistv5 – Published: 2026-09-17 21:47 – Updated: 2026-09-23 19:09
VLAI
Title
Vvveb: Stored XSS via sanitizeHTML() bypass in user profile bio field
Summary
Vvveb is a powerful and easy to use CMS with page builder to build websites, blogs or ecommerce stores. Prior to 1.0.8.5, app/controller/user/profile.php accepts the user[bio] field and passes stored content through sanitizeHTML() in system/functions.php, whose on* event-handler regular expression omits the forward-slash delimiter and whose do-while condition compares the string to itself, so forbidden nested tags are removed only once. An Author-role or higher user can submit solidus-prefixed event-handler markup or nested forbidden tags that survive sanitization. The stored bio is rendered without sufficient output encoding on /author/{username}, in the admin user-management view, and potentially in comment displays, causing attacker-controlled JavaScript to execute when unauthenticated visitors, administrators, or other users view the content. This can expose browser-session data and permit victim-context account actions, defacement, or phishing. This issue is fixed in version 1.0.8.5.
Severity
7.6 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 19:09 UTC
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
  • CWE-116 - Improper Encoding or Escaping of Output
  • CWE-185 - Incorrect Regular Expression
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7797 records in the last 180 days details
References
Impacted products
Vendor Product Version
givanz Vvveb Affected: < 1.0.8.5
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-48147 (GCVE-0-2026-48147)

Vulnerability from cvelistv5 – Published: 2026-05-27 17:14 – Updated: 2026-05-27 18:32
VLAI
Title
Budibase: Unanchored Regex in `matchers.ts` Allows CSRF Bypass via Query String Injection in Budibase Worker
Summary
Budibase is an open-source low-code platform. Prior to 3.35.4, the buildMatcherRegex() / matches() functions in packages/backend-core/src/middleware/matchers.ts route patterns are compiled into unanchored regular expressions and tested against ctx.request.url, which includes the full query string. The CSRF middleware in the Budibase Worker uses this matching system to decide whether to skip CSRF token validation. An unauthenticated attacker can forge state-changing cross-origin requests against any Worker API endpoint by injecting a public route pattern into the query string, causing the CSRF middleware to skip token validation entirely. This allows actions such as sending admin invites, modifying global configuration, and managing users without a valid CSRF token. This vulnerability is fixed in 3.35.4.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-27 18:32 UTC
CWE
  • CWE-185 - Incorrect Regular Expression
  • CWE-352 - Cross-Site Request Forgery (CSRF)
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7797 records in the last 180 days details
References
Impacted products
Vendor Product Version
Budibase budibase Affected: < 3.35.4
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-47674 (GCVE-0-2026-47674)

Vulnerability from cvelistv5 – Published: 2026-05-28 15:29 – Updated: 2026-06-02 18:15
VLAI
Title
Hono: IP Restriction bypasses static deny rules for non-canonical IPv6
Summary
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.21, the ip-restriction middleware (hono/ip-restriction) compares incoming IP addresses against configured deny and allow rules using string equality after partial normalization. Non-canonical IPv6 representations of an address already listed in a static rule — such as compressed forms, explicit-zero forms, or hex-notation IPv4-mapped addresses — do not match the normalized rule entry, causing the rule to be silently skipped. This vulnerability is fixed in 4.12.21.
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 · CISA-ADP (v2.0.3)
Decision recorded 2026-06-02 18:14 UTC
CWE
  • CWE-185 - Incorrect Regular Expression
  • CWE-1289 - Improper Validation of Unsafe Equivalence in Input
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7797 records in the last 180 days details
References
Impacted products
Vendor Product Version
honojs hono Affected: < 4.12.21
Create a notification for this product.
Show details on NVD website
To clipboard 

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Mitigation MIT-45
Implementation

Strategy: Refactoring

Regular expressions can become error prone when defining a complex language even for those experienced in writing grammars. Determine if several smaller regular expressions simplify one large regular expression. Also, subject the regular expression to thorough testing techniques such as equivalence partitioning, boundary value analysis, and robustness. After testing and a reasonable confidence level is achieved, a regular expression may not be foolproof. If an exploit is allowed to slip through, then record the exploit and refactor the regular expression.

CAPEC-15: Command Delimiters

An attack of this type exploits a programs' vulnerabilities that allows an attacker's commands to be concatenated onto a legitimate command with the intent of targeting other resources such as the file system or database. The system that uses a filter or denylist input validation, as opposed to allowlist validation is vulnerable to an attacker who predicts delimiters (or combinations of delimiters) not present in the filter or denylist. As with other injection attacks, the attacker uses the command delimiter payload as an entry point to tunnel through the application and activate additional attacks through SQL queries, shell commands, network scanning, and so on.

CAPEC-6: Argument Injection

An attacker changes the behavior or state of a targeted application through injecting data or command syntax through the targets use of non-validated and non-filtered arguments of exposed services or methods.

CAPEC-79: Using Slashes in Alternate Encoding

This attack targets the encoding of the Slash characters. An adversary would try to exploit common filtering problems related to the use of the slashes characters to gain access to resources on the target host. Directory-driven systems, such as file systems and databases, typically use the slash character to indicate traversal between directories or other container components. For murky historical reasons, PCs (and, as a result, Microsoft OSs) choose to use a backslash, whereas the UNIX world typically makes use of the forward slash. The schizophrenic result is that many MS-based systems are required to understand both forms of the slash. This gives the adversary many opportunities to discover and abuse a number of common filtering problems. The goal of this pattern is to discover server software that only applies filters to one version, but not the other.

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