CVE-2026-15534

Perl versions through 5.45.1 are vulnerable to out-of-bounds heap reads and writes during regular expression matching. The root cause is a positive overflow of a signed 32-bit count in the regex engine's superlinear cache within S_regmatch . Specifically, when matching a large subject against a p...

CVE-2026-69207

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.34, the built-in CORS middleware, hono/cors, is vulnerable to a regular expression denial of service ReDoS. During a preflight OPTIONS request, the middleware parses the attacker-controlled...

CVE-2026-69207

Hono’s built-in CORS middleware (hono/cors) is vulnerable to a ReDoS in the Access-Control-Request-Headers parsing during preflight requests when allowHeaders is unset/empty. The regex-based parser can backtrack quadratically with long whitespace, potentially causing seconds of CPU usage per pref...

CVE-2026-67422

A flaw was found in pymdown-extensions, a collection of extensions for the Python Markdown library. This vulnerability, known as a Regular Expression Denial of Service ReDoS, arises from how certain inline processors handle regular expressions. An unauthenticated remote attacker can exploit this ...

OESA-2026-3309 trafficserver security update

Apache Traffic Server is an OpenSource HTTP / HTTPS / HTTP/2 / QUIC reverse, forward and transparent proxy and cache. Security Fixes: Regular Expression without Anchors vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 10.0.X through 10.1.3, from 9.0.X through...

Linux Distros Unpatched Vulnerability : CVE-2026-64655

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

CVE-2026-63637

Dgraph is an open source distributed GraphQL database. Prior to 25.3.8, maybeQuoteArg in graphql/resolve/queryrewriter.go passes regexp filter strings into generated DQL without quoting or validating the /pattern/flags form, allowing crafted GraphQL query or mutation filters to inject DQL...

CVE-2026-63637 Dgraph: DQL Injection via unvalidated regexp filter argument in GraphQL query rewriter

Dgraph is an open source distributed GraphQL database. Prior to 25.3.8, maybeQuoteArg in graphql/resolve/queryrewriter.go passes regexp filter strings into generated DQL without quoting or validating the /pattern/flags form, allowing crafted GraphQL query or mutation filters to inject DQL...

CVE-2026-68749

Inefficient Regular Expression Complexity vulnerability in the CSS scrubber in rrrene htmlsanitizeex allows an unauthenticated remote attacker to exhaust server CPU via a long CSS declaration in sanitized HTML. The declaration regex in HtmlSanitizeEx.Scrubber.CSS.scrub/1 matches the property name...

Security Bulletin: Multiple Vulnerabilities in IBM Event Streams

Summary Multiple vulnerabilities were addressed in IBM Event Streams version 13.0.1 Vulnerability Details CVEID:CVE-2025-12183 DESCRIPTION: Out-of-bounds memory operations in org.lz4:lz4-java 1.8.0 and earlier allow remote attackers to cause denial of service and read adjacent memory via untruste...

CVE-2026-64655: Incorrect Regular Expression

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...

CVE-2026-68749: Inefficient Regular Expression Complexity

Inefficient Regular Expression Complexity vulnerability in the CSS scrubber in rrrene htmlsanitizeex allows an unauthenticated remote attacker to exhaust server CPU via a long CSS declaration in sanitized HTML. The declaration regex in HtmlSanitizeEx.Scrubber.CSS.scrub/1 matches the property name...

UBUNTU-CVE-2026-71190

In OpenStack Swift through 2.38.0, the proxy server Accept header parser contains a regular expression vulnerable to catastrophic backtracking ReDoS. The "qdtext" pattern ?:^"|\. allows an unauthenticated remote attacker to send a crafted Accept header that causes exponential CPU consumption in...

CVE-2026-71190

OpenStack Swift proxy server vulnerability CVE-2026-71190 affects Swift up to 2.38.0. The proxy Accept header parser uses a qdtext pattern (?:[^"]|\.)* that allows catastrophic backtracking (ReDoS). An unauthenticated remote attacker can craft an Accept header to trigger exponential CPU usage, wh...

EUVD-2026-53048

In OpenStack Swift through 2.38.0, the proxy server Accept header parser contains a regular expression vulnerable to catastrophic backtracking ReDoS. The "qdtext" pattern ?:^"|\. allows an unauthenticated remote attacker to send a crafted Accept header that causes exponential CPU consumption in...

CVE-2026-71190

In OpenStack Swift through 2.38.0, the proxy server Accept header parser contains a regular expression vulnerable to catastrophic backtracking ReDoS. The "qdtext" pattern ?:^"|\. allows an unauthenticated remote attacker to send a crafted Accept header that causes exponential CPU consumption in...

Open WebUI: Any authenticated user can stall a worker via a knowledge-search pattern that backtracks catastrophically

Summary The built-in knowledge search tools let a chat participant choose the pattern used to grep knowledge files. Patterns containing regex metacharacters were compiled with Python's backtracking re engine and run against every line of every reachable file, with no time limit anywhere on that...

Thumbor has Regex Denial of Service (ReDoS) in `convolution` filter

SummaryThe regular expression used to parse the convolution filter exhibits exponential-time backtracking for certain inputs, enabling a Regular Expression Denial of Service ReDoS. DetailsThe RegExp for convolution is defined as...

PYSEC-2026-3582 Natural Language Toolkit (NLTK): ReDoS in NLTK ReviewsCorpusReader FEATURES regex

Summary ReviewsCorpusReader extracts feature annotations of the form label followed by a bracketed signed digit e.g. a label then +2 from each review line, using the module-level FEATURES regex. The feature-label sub-pattern is unbounded — an optional greedy run of word-plus-whitespace groups...

PYSEC-2026-3616 Thumbor has Regex Denial of Service (ReDoS) in `convolution` filter

Summary The regular expression used to parse the convolution filter exhibits exponential-time backtracking for certain inputs, enabling a Regular Expression Denial of Service ReDoS. Details The RegExp for convolution is defined as...