CVE-2026-40319

Giskard has a Regular Expression Denial of Service (ReDoS) in RegexMatching Check

Giskard is an open-source testing framework for AI models. In versions prior to 1.0.2b1, the RegexMatching check passes a user-supplied regular expression pattern directly to Python's re.search() without any timeout or complexity guard. A crafted regex pattern can trigger catastrophic backtracking, causing the process to hang indefinitely. Exploitation requires write access to a check definition and subsequent execution of the test suite. This issue has been fixed in giskard-checks version 1.0.2b1.

CVSS 4.0 · 1 Low EPSS < 1% KEV · Not listed

Vendors

Giskard Giskard-ai

Products

Giskard Giskard

CVE-2026-5986

Zod jsVideoUrlParser util.js getTime redos

A weakness has been identified in Zod jsVideoUrlParser up to 0.5.1. The impacted element is the function getTime in the library lib/util.js. This manipulation of the argument timestamp causes inefficient regular expression complexity. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

Vendors

Zod

Products

Jsvideourlparser

CVE-2026-4539

pygments archetype.py AdlLexer redos

A security flaw has been discovered in pygments up to 2.19.2. The impacted element is the function AdlLexer of the file pygments/lexers/archetype.py. The manipulation results in inefficient regular expression complexity. The attack is only possible with local access. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

CVSS 4.0 · 4.8 Medium EPSS < 1% KEV · Not listed

Vendors

Pygments

Products

Pygments

CVE-2023-6736

Inefficient Regular Expression Complexity in GitLab

An issue has been discovered in GitLab EE affecting all versions starting from 11.3 before 16.7.6, all versions starting from 16.8 before 16.8.3, all versions starting from 16.9 before 16.9.1. It was possible for an attacker to cause a client-side denial of service using malicious crafted content in the CODEOWNERS file.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Gitlab

Products

Gitlab

CVE-2025-6069

HTMLParser quadratic complexity when processing malformed inputs

The html.parser.HTMLParser class had worse-case quadratic complexity when processing certain crafted malformed inputs potentially leading to amplified denial-of-service.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Python

Products

Cpython

CVE-2026-22809

tarteaucitron.js has Regular Expression Denial of Service (ReDoS) vulnerability

tarteaucitron.js is a compliant and accessible cookie banner. Prior to 1.29.0, a Regular Expression Denial of Service (ReDoS) vulnerability was identified in tarteaucitron.js in the handling of the issuu_id parameter. This vulnerability is fixed in 1.29.0.

CVSS 3.1 · 4.4 Medium EPSS < 1% KEV · Not listed

Vendors

Amauri

Products

Tarteaucitronjs

CVE-2026-24001

jsdiff has a Denial of Service vulnerability in parsePatch and applyPatch

jsdiff is a JavaScript text differencing implementation. Prior to versions 8.0.3, 5.2.2, 4.0.4, and 3.5.1, attempting to parse a patch whose filename headers contain the line break characters `\r`, `\u2028`, or `\u2029` can cause the `parsePatch` method to enter an infinite loop. It then consumes memory without limit until the process crashes due to running out of memory. Applications are therefore likely to be vulnerable to a denial-of-service attack if they call `parsePatch` with a user-provided patch as input. A large payload is not needed to trigger the vulnerability, so size limits on user input do not provide any protection. Furthermore, some applications may be vulnerable even when calling `parsePatch` on a patch generated by the application itself if the user is nonetheless able to control the filename headers (e.g. by directly providing the filenames of the files to be diffed). The `applyPatch` method is similarly affected if (and only if) called with a string representation of a patch as an argument, since under the hood it parses that string using `parsePatch`. Other methods of the library are unaffected. Finally, a second and lesser interdependent bug - a ReDOS - also exhibits when those same line break characters are present in a patch's *patch* header (also known as its "leading garbage"). A maliciously-crafted patch header of length *n* can take `parsePatch` O(*n*³) time to parse. Versions 8.0.3, 5.2.2, 4.0.4, and 3.5.1 contain a fix. As a workaround, do not attempt to parse patches that contain any of these characters: `\r`, `\u2028`, or `\u2029`.

CVSS 4.0 · 2.7 Low EPSS < 1% KEV · Not listed

Vendors

Kpdecker

Products

Jsdiff

CVE-2026-0621

MCP TypeScript SDK UriTemplate Exploded Array Pattern ReDoS

Anthropic's MCP TypeScript SDK versions up to and including 1.25.1 contain a regular expression denial of service (ReDoS) vulnerability in the UriTemplate class when processing RFC 6570 exploded array patterns. The dynamically generated regular expression used during URI matching contains nested quantifiers that can trigger catastrophic backtracking on specially crafted inputs, resulting in excessive CPU consumption. An attacker can exploit this by supplying a malicious URI that causes the Node.js process to become unresponsive, leading to a denial of service.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

Anthropic Lfprojects

Products

Mcp Typescript Sdk Mcp Typescript Sdk

CVE-2026-0668

VisualData extension: Regular Expression Denial of Service (ReDoS) via crafted user input

Inefficient Regular Expression Complexity vulnerability in Wikimedia Foundation MediaWiki - VisualData Extension allows Regular Expression Exponential Blowup.This issue affects MediaWiki - VisualData Extension: 1.45.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

Vendors

Mediawiki Wikimedia Wikisphere

Products

Mediawiki Mediawiki-visualdata Extension Visualdata

CVE-2026-21868

Flag Forge has ReDoS Vulnerability in User Profile Lookup API

Flag Forge is a Capture The Flag (CTF) platform. Versions 2.3.2 and below have a Regular Expression Denial of Service (ReDoS) vulnerability in the user profile API endpoint (/api/user/[username]). The application constructs a regular expression dynamically using unescaped user input (the username parameter). An attacker can exploit this by sending a specially crafted username containing regex meta-characters (e.g., deeply nested groups or quantifiers), causing the MongoDB regex engine to consume excessive CPU resources. This can lead to Denial of Service for other users. The issue is fixed in version 2.3.3. To workaround this issue, implement a Web Application Firewall (WAF) rule to block requests containing regex meta-characters in the URL path.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Flagforge Flagforgectf

Products

Flagforge Flagforge

CVE-2026-23897

Apollo Server is vulnerable to denial of service with `startStandaloneServer`

Apollo Server is an open-source, spec-compliant GraphQL server that's compatible with any GraphQL client, including Apollo Client. In versions from 2.0.0 to 3.13.0, 4.2.0 to before 4.13.0, and 5.0.0 to before 5.4.0, the default configuration of startStandaloneServer from @apollo/server/standalone is vulnerable to denial of service (DoS) attacks through specially crafted request bodies with exotic character set encodings. This issue does not affect users that use @apollo/server as a dependency for integration packages, like @as-integrations/express5 or @as-integrations/next, only direct usage of startStandaloneServer.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Apollographql

Products

Apollo Explorer Apollo Server

CVE-2026-25547

Uncontrolled Resource Consumption in @isaacs/brace-expansion

@isaacs/brace-expansion is a hybrid CJS/ESM TypeScript fork of brace-expansion. Prior to version 5.0.1, @isaacs/brace-expansion is vulnerable to a denial of service (DoS) issue caused by unbounded brace range expansion. When an attacker provides a pattern containing repeated numeric brace ranges, the library attempts to eagerly generate every possible combination synchronously. Because the expansion grows exponentially, even a small input can consume excessive CPU and memory and may crash the Node.js process. This issue has been patched in version 5.0.1.

CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed

Vendors

Isaacs

Products

Brace-expansion

CVE-2026-26006

Redos (Regular Expression Denial of Service) at Code Extraction Block in significant-gravitas/autogpt

AutoGPT is a platform that allows users to create, deploy, and manage continuous artificial intelligence agents that automate complex workflows. The autogpt before 0.6.32 is vulnerable to Regular Expression Denial of Service due to the use of regex at Code Extraction Block. The two Regex are used containing the corresponding dangerous patterns \s+[\s\S]*? and \s+(.*?). They share a common characteristic — the combination of two adjacent quantifiers that can match the same space character (\s). As a result, an attacker can supply a long sequence of space characters to trigger excessive regex backtracking, potentially leading to a Denial of Service (DoS). This vulnerability is fixed in 0.6.32.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Agpt Significant-gravitas

Products

Autogpt Platform Autogpt

CVE-2026-2327

markdown-it: markdown-it: Denial of Service via Regular Expression Denial of Service in linkify function

Versions of the package markdown-it from 13.0.0 and before 14.1.1 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the use of the regex /\*+$/ in the linkify function. An attacker can supply a long sequence of * characters followed by a non-matching character, which triggers excessive backtracking and may lead to a denial-of-service condition.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

Vendors

Markdown-it Markdown-it Project

Products

Markdown-it Markdown-it

CVE-2026-26996

minimatch has a ReDoS via repeated wildcards with non-matching literal in pattern

minimatch is a minimal matching utility for converting glob expressions into JavaScript RegExp objects. Versions 10.2.0 and below are vulnerable to Regular Expression Denial of Service (ReDoS) when a glob pattern contains many consecutive * wildcards followed by a literal character that doesn't appear in the test string. Each * compiles to a separate [^/]*? regex group, and when the match fails, V8's regex engine backtracks exponentially across all possible splits. The time complexity is O(4^N) where N is the number of * characters. With N=15, a single minimatch() call takes ~2 seconds. With N=34, it hangs effectively forever. Any application that passes user-controlled strings to minimatch() as the pattern argument is vulnerable to DoS. This issue has been fixed in version 10.2.1.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

Isaacs Minimatch Project

Products

Minimatch Minimatch

CVE-2026-1388

Inefficient Regular Expression Complexity in GitLab

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 9.2 before 18.7.5, 18.8 before 18.8.5, and 18.9 before 18.9.1 that could have allowed an unauthenticated user to cause regular expression denial of service by sending specially crafted input to a merge request endpoint under certain conditions.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Gitlab

Products

Gitlab

CVE-2026-27903

minimatch has a ReDoS: matchOne() combinatorial backtracking via multiple non-adjacent GLOBSTAR segments

minimatch is a minimal matching utility for converting glob expressions into JavaScript RegExp objects. Prior to version 10.2.3, 9.0.7, 8.0.6, 7.4.8, 6.2.2, 5.1.8, 4.2.5, and 3.1.3, `matchOne()` performs unbounded recursive backtracking when a glob pattern contains multiple non-adjacent `**` (GLOBSTAR) segments and the input path does not match. The time complexity is O(C(n, k)) -- binomial -- where `n` is the number of path segments and `k` is the number of globstars. With k=11 and n=30, a call to the default `minimatch()` API stalls for roughly 5 seconds. With k=13, it exceeds 15 seconds. No memoization or call budget exists to bound this behavior. Any application where an attacker can influence the glob pattern passed to `minimatch()` is vulnerable. The realistic attack surface includes build tools and task runners that accept user-supplied glob arguments (ESLint, Webpack, Rollup config), multi-tenant systems where one tenant configures glob-based rules that run in a shared process, admin or developer interfaces that accept ignore-rule or filter configuration as globs, and CI/CD pipelines that evaluate user-submitted config files containing glob patterns. An attacker who can place a crafted pattern into any of these paths can stall the Node.js event loop for tens of seconds per invocation. The pattern is 56 bytes for a 5-second stall and does not require authentication in contexts where pattern input is part of the feature. Versions 10.2.3, 9.0.7, 8.0.6, 7.4.8, 6.2.2, 5.1.8, 4.2.5, and 3.1.3 fix the issue.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Isaacs Minimatch Project

Products

Minimatch Minimatch

CVE-2026-27904

minimatch ReDoS: nested *() extglobs generate catastrophically backtracking regular expressions

minimatch is a minimal matching utility for converting glob expressions into JavaScript RegExp objects. Prior to version 10.2.3, 9.0.7, 8.0.6, 7.4.8, 6.2.2, 5.1.8, 4.2.5, and 3.1.4, nested `*()` extglobs produce regexps with nested unbounded quantifiers (e.g. `(?:(?:a|b)*)*`), which exhibit catastrophic backtracking in V8. With a 12-byte pattern `*(*(*(a|b)))` and an 18-byte non-matching input, `minimatch()` stalls for over 7 seconds. Adding a single nesting level or a few input characters pushes this to minutes. This is the most severe finding: it is triggered by the default `minimatch()` API with no special options, and the minimum viable pattern is only 12 bytes. The same issue affects `+()` extglobs equally. Versions 10.2.3, 9.0.7, 8.0.6, 7.4.8, 6.2.2, 5.1.8, 4.2.5, and 3.1.4 fix the issue.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Isaacs Minimatch Project

Products

Minimatch Minimatch

CVE-2026-26936

Inefficient Regular Expression Complexity in Kibana Leading to Denial of Service

Inefficient Regular Expression Complexity (CWE-1333) in the AI Inference Anonymization Engine in Kibana can lead Denial of Service via Regular Expression Exponential Blowup (CAPEC-492).

CVSS 3.1 · 4.9 Medium EPSS < 1% KEV · Not listed

Vendors

Elastic

Products

Kibana

CVE-2026-30925

Parse Server affected by Regular Expression Denial of Service (ReDoS) via `$regex` query in LiveQuery

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.5.0-alpha.14 and 8.6.11, a malicious client can subscribe to a LiveQuery with a crafted $regex pattern that causes catastrophic backtracking, blocking the Node.js event loop. This makes the entire Parse Server unresponsive, affecting all clients. Any Parse Server deployment with LiveQuery enabled is affected. The attacker only needs the application ID and JavaScript key, both of which are public in client-side apps. This only affects LiveQuery subscription matching, which evaluates regex in JavaScript on the Node.js event loop. Normal REST and GraphQL queries are not affected because their regex is evaluated by the database engine. This vulnerability is fixed in 9.5.0-alpha.14 and 8.6.11.

CVSS 4.0 · 8.2 High EPSS < 1% KEV · Not listed

Vendors

Parse Community Parseplatform

Products

Parse Server Parse-server