Skip to main content

CWE-185

Incorrect Regular Expression

13 CVEs Avg CVSS 6.4 MITRE
1
CRITICAL
3
HIGH
9
MEDIUM
0
LOW
2
POC
0
KEV

Monthly

CVE-2026-47674 MEDIUM PATCH This Month

IP restriction bypass in Hono's ip-restriction middleware (hono/ip-restriction) prior to version 4.12.21 allows unauthenticated remote attackers to circumvent configured deny and allow rules by submitting non-canonical IPv6 representations of restricted addresses. String equality comparison applied after only partial normalization means that compressed, explicit-zero, or hex-notation IPv4-mapped IPv6 forms of a listed address silently fail to match the normalized rule entry, causing enforcement to be skipped entirely. No public exploit has been identified at time of analysis, but the bypass requires only trivial reformatting of a standard IPv6 address, making it practically low-effort for any attacker aware of the flaw.

Information Disclosure Canonical Hono
NVD GitHub
CVSS 3.1
5.3
CVE-2026-48147 MEDIUM PATCH This Month

CSRF middleware bypass in Budibase Worker allows unauthenticated remote attackers to forge state-changing requests against any Worker API endpoint by injecting a public route pattern into the query string. Affected versions prior to 3.35.4 are exposed to privilege escalation actions including sending admin invites, modifying global configuration, and managing users - all without a valid CSRF token. User interaction is required (CVSS UI:R), limiting opportunistic mass exploitation, though proof-of-concept exploit code exists per SSVC assessment. No active exploitation has been confirmed by CISA KEV at time of analysis.

CSRF
NVD GitHub
CVSS 3.1
6.5
EPSS
0.0%
CVE-2026-45065 PHP MEDIUM PATCH GHSA This Month

Protocol-relative URL injection in Symfony's UrlGenerator allows open redirect via regex alternation bypass in route parameter validation. When route requirements use alternation patterns (e.g., `_locale: 'en|fr|vi|de'`), the validation regex `#^REQUIREMENT$#` fails to anchor middle alternatives due to regex operator precedence, enabling substring matching against attacker-supplied values. An attacker who can influence route parameters fed into the Twig `path()`/`url()` helpers can inject a value like `/evil.com` - which satisfies the requirement by containing `vi` as a substring - causing UrlGenerator to produce `//evil.com/...`, a protocol-relative URL the browser navigates off-site. No public exploit is identified at time of analysis, and the vulnerability is not listed in CISA KEV; patches are released across all supported Symfony branches.

Information Disclosure
NVD GitHub
CVE-2026-4296 HIGH PATCH This Week

An incorrect regular expression vulnerability was identified in GitHub Enterprise Server that allowed an attacker to bypass OAuth redirect URI validation. An attacker with knowledge of a first-party OAuth application's registered callback URL could craft a malicious authorization link that, when clicked by a victim, would redirect the OAuth authorization code to an attacker-controlled domain. This could allow the attacker to gain unauthorized access to the victim's account with the scopes granted to the OAuth application. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.20.1, 3.19.5, 3.18.8, 3.17.14, 3.16.17, 3.15.21, 3.14.26. This vulnerability was reported via the GitHub Bug Bounty program.

Authentication Bypass
NVD GitHub
CVSS 4.0
7.5
EPSS
0.1%
CVE-2026-25542 Go MEDIUM PATCH GHSA This Month

Tekton Pipelines 0.43.0 through 1.11.0 allows authenticated attackers to bypass trusted resource verification policies via unanchored regular expression patterns that match substrings rather than exact resource sources, enabling policy manipulation and unauthorized verification mode changes. The vulnerability stems from Go's regexp.MatchString function matching patterns anywhere within a string rather than requiring full anchoring, permitting attackers to craft source URIs containing trusted patterns as substrings to trigger unintended policy matches and potentially apply weaker verification keys or modes.

Authentication Bypass Kubernetes
NVD GitHub
CVSS 3.1
6.5
EPSS
0.0%
CVE-2026-39350 Go MEDIUM PATCH GHSA This Month

Istio is an open platform to connect, manage, and secure microservices. In versions 1.25.0 through 1.27.8, 1.28.0 through 1.28.5, 1.29.0, and 1.29.1, the serviceAccounts and notServiceAccounts fields in AuthorizationPolicy incorrectly interpret dots (.) as a regular expression matcher. Because . is a valid character in a service account name, an AuthorizationPolicy ALLOW rule targeting a service account such as cert-manager.io also matches cert-manager-io, cert-managerXio, etc. A DENY rule targeting the same name fails to block those variants. Fixes are available in versions 1.29.2, 1.28.6, and 1.27.9.

Information Disclosure
NVD GitHub
CVSS 3.1
5.4
EPSS
0.0%
CVE-2026-33418 npm HIGH PATCH This Week

A regex-based bypass vulnerability in the @dicebear/converter npm package allows attackers to circumvent SVG dimension sanitization by injecting decoy <svg tags in XML constructs. Applications using @dicebear/converter on Node.js to process untrusted SVG input are vulnerable to denial of service through unbounded memory allocation when rendering malformed SVGs. The CVSS score of 7.5 reflects the high availability impact with network-accessible attack vector requiring no authentication or user interaction.

Denial Of Service Node.js
NVD GitHub VulDB
CVSS 3.1
7.5
EPSS
0.0%
CVE-2026-27895 MEDIUM This Month

Insufficient file extension validation in the PDF export component of LDAP Account Manager prior to version 9.5 permits authenticated attackers to upload arbitrary file types, including PHP files, to the server. When combined with GHSA-w7xq-vjr3-p9cf, this vulnerability enables remote code execution with web server privileges. Affected users should upgrade to version 9.5 or restrict web server write access to the LAM configuration directory.

PHP RCE
NVD GitHub VulDB
CVSS 3.1
4.3
EPSS
0.1%
CVE-2026-3419 npm MEDIUM PATCH This Month

Fastify improperly validates Content-Type headers by accepting RFC 9110-violating malformed values with trailing characters, allowing attackers to bypass content-type restrictions and route requests to unintended parsers. When regex-based content-type parsing is enabled, requests with invalid Content-Type headers such as "application/json garbage" are processed normally instead of being rejected, potentially enabling request misrouting and manipulation of parser behavior. No patch is currently available for this medium-severity vulnerability affecting Fastify applications.

Authentication Bypass Red Hat Fastify
NVD GitHub VulDB
CVSS 3.1
5.3
EPSS
0.0%
CVE-2026-25896 npm CRITICAL POC PATCH Act Now

ReDoS in fast-xml-parser before fix via crafted XML. PoC and patch available.

XSS Red Hat Fast Xml Parser
NVD GitHub VulDB
CVSS 3.1
9.3
EPSS
0.0%
CVSS 5.3
MEDIUM PATCH This Month

IP restriction bypass in Hono's ip-restriction middleware (hono/ip-restriction) prior to version 4.12.21 allows unauthenticated remote attackers to circumvent configured deny and allow rules by submitting non-canonical IPv6 representations of restricted addresses. String equality comparison applied after only partial normalization means that compressed, explicit-zero, or hex-notation IPv4-mapped IPv6 forms of a listed address silently fail to match the normalized rule entry, causing enforcement to be skipped entirely. No public exploit has been identified at time of analysis, but the bypass requires only trivial reformatting of a standard IPv6 address, making it practically low-effort for any attacker aware of the flaw.

Information Disclosure Canonical Hono
NVD GitHub
EPSS 0% CVSS 6.5
MEDIUM PATCH This Month

CSRF middleware bypass in Budibase Worker allows unauthenticated remote attackers to forge state-changing requests against any Worker API endpoint by injecting a public route pattern into the query string. Affected versions prior to 3.35.4 are exposed to privilege escalation actions including sending admin invites, modifying global configuration, and managing users - all without a valid CSRF token. User interaction is required (CVSS UI:R), limiting opportunistic mass exploitation, though proof-of-concept exploit code exists per SSVC assessment. No active exploitation has been confirmed by CISA KEV at time of analysis.

CSRF
NVD GitHub
MEDIUM PATCH This Month

Protocol-relative URL injection in Symfony's UrlGenerator allows open redirect via regex alternation bypass in route parameter validation. When route requirements use alternation patterns (e.g., `_locale: 'en|fr|vi|de'`), the validation regex `#^REQUIREMENT$#` fails to anchor middle alternatives due to regex operator precedence, enabling substring matching against attacker-supplied values. An attacker who can influence route parameters fed into the Twig `path()`/`url()` helpers can inject a value like `/evil.com` - which satisfies the requirement by containing `vi` as a substring - causing UrlGenerator to produce `//evil.com/...`, a protocol-relative URL the browser navigates off-site. No public exploit is identified at time of analysis, and the vulnerability is not listed in CISA KEV; patches are released across all supported Symfony branches.

Information Disclosure
NVD GitHub
EPSS 0% CVSS 7.5
HIGH PATCH This Week

An incorrect regular expression vulnerability was identified in GitHub Enterprise Server that allowed an attacker to bypass OAuth redirect URI validation. An attacker with knowledge of a first-party OAuth application's registered callback URL could craft a malicious authorization link that, when clicked by a victim, would redirect the OAuth authorization code to an attacker-controlled domain. This could allow the attacker to gain unauthorized access to the victim's account with the scopes granted to the OAuth application. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.20.1, 3.19.5, 3.18.8, 3.17.14, 3.16.17, 3.15.21, 3.14.26. This vulnerability was reported via the GitHub Bug Bounty program.

Authentication Bypass
NVD GitHub
EPSS 0% CVSS 6.5
MEDIUM PATCH This Month

Tekton Pipelines 0.43.0 through 1.11.0 allows authenticated attackers to bypass trusted resource verification policies via unanchored regular expression patterns that match substrings rather than exact resource sources, enabling policy manipulation and unauthorized verification mode changes. The vulnerability stems from Go's regexp.MatchString function matching patterns anywhere within a string rather than requiring full anchoring, permitting attackers to craft source URIs containing trusted patterns as substrings to trigger unintended policy matches and potentially apply weaker verification keys or modes.

Authentication Bypass Kubernetes
NVD GitHub
EPSS 0% CVSS 5.4
MEDIUM PATCH This Month

Istio is an open platform to connect, manage, and secure microservices. In versions 1.25.0 through 1.27.8, 1.28.0 through 1.28.5, 1.29.0, and 1.29.1, the serviceAccounts and notServiceAccounts fields in AuthorizationPolicy incorrectly interpret dots (.) as a regular expression matcher. Because . is a valid character in a service account name, an AuthorizationPolicy ALLOW rule targeting a service account such as cert-manager.io also matches cert-manager-io, cert-managerXio, etc. A DENY rule targeting the same name fails to block those variants. Fixes are available in versions 1.29.2, 1.28.6, and 1.27.9.

Information Disclosure
NVD GitHub
EPSS 0% CVSS 7.5
HIGH PATCH This Week

A regex-based bypass vulnerability in the @dicebear/converter npm package allows attackers to circumvent SVG dimension sanitization by injecting decoy <svg tags in XML constructs. Applications using @dicebear/converter on Node.js to process untrusted SVG input are vulnerable to denial of service through unbounded memory allocation when rendering malformed SVGs. The CVSS score of 7.5 reflects the high availability impact with network-accessible attack vector requiring no authentication or user interaction.

Denial Of Service Node.js
NVD GitHub VulDB
EPSS 0% CVSS 4.3
MEDIUM This Month

Insufficient file extension validation in the PDF export component of LDAP Account Manager prior to version 9.5 permits authenticated attackers to upload arbitrary file types, including PHP files, to the server. When combined with GHSA-w7xq-vjr3-p9cf, this vulnerability enables remote code execution with web server privileges. Affected users should upgrade to version 9.5 or restrict web server write access to the LAM configuration directory.

PHP RCE
NVD GitHub VulDB
EPSS 0% CVSS 5.3
MEDIUM PATCH This Month

Fastify improperly validates Content-Type headers by accepting RFC 9110-violating malformed values with trailing characters, allowing attackers to bypass content-type restrictions and route requests to unintended parsers. When regex-based content-type parsing is enabled, requests with invalid Content-Type headers such as "application/json garbage" are processed normally instead of being rejected, potentially enabling request misrouting and manipulation of parser behavior. No patch is currently available for this medium-severity vulnerability affecting Fastify applications.

Authentication Bypass Red Hat Fastify
NVD GitHub VulDB
EPSS 0% CVSS 9.3
CRITICAL POC PATCH Act Now

ReDoS in fast-xml-parser before fix via crafted XML. PoC and patch available.

XSS Red Hat Fast Xml Parser
NVD GitHub VulDB

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy