Regular Expression Denial of Service (ReDoS)

Overview PraisonAI is a PraisonAI is an AI Agents Framework with Self Reflection. PraisonAI application combines PraisonAI Agents, AutoGen, and CrewAI into a low-code solution for building and managing multi-agent LLM systems, focusing on simplicity, customisation, and efficient human-agent...

GHSA-8W9J-HC3G-3G7F PraisonAI Has ReDoS via Unvalidated User-Controlled Regex in MCPToolIndex.search_tools()

Summary MCPToolIndex.searchtools compiles a caller-supplied string directly as a Python regular expression with no validation, sanitization, or timeout. A crafted regex causes catastrophic backtracking in the re engine, blocking the Python thread for hundreds of seconds and causing a complete...

PT-2026-29826

Name of the Vulnerable Software and Affected Versions PraisonAI versions prior to 4.5.90 Description PraisonAI's MCPToolIndex.search tools function compiles a caller-supplied string directly as a Python regular expression without validation, sanitization, or a timeout. A crafted regular expressio...

minimatch: Minimatch: Denial of Service via catastrophic backtracking in glob expressions

A flaw was found in minimatch. A remote attacker could exploit this vulnerability by providing a specially crafted glob expression with nested unbounded quantifiers. This could lead to catastrophic backtracking in the V8 JavaScript engine, causing the application to become unresponsive and...

EUVD-2026-16322

path-to-regexp vulnerable to Regular Expression Denial of Service via multiple wildcards...

EUVD-2026-16273

path-to-regexp vulnerable to Regular Expression Denial of Service via multiple route parameters...

AZL-81035 CVE-2026-33671 affecting package nodejs24 for versions less than 24.14.1-2

Picomatch is a glob matcher written JavaScript. Versions prior to 4.0.4, 3.0.2, and 2.3.2 are vulnerable to Regular Expression Denial of Service ReDoS when processing crafted extglob patterns. Certain patterns using extglob quantifiers such as + and , especially when combined with overlapping...

AZL-81026 CVE-2026-33671 affecting package nodejs-nodemon 2.0.3-5

Picomatch is a glob matcher written JavaScript. Versions prior to 4.0.4, 3.0.2, and 2.3.2 are vulnerable to Regular Expression Denial of Service ReDoS when processing crafted extglob patterns. Certain patterns using extglob quantifiers such as + and , especially when combined with overlapping...

AZL-81092 CVE-2026-0967 affecting package libssh for versions less than 0.10.6-7

A flaw was found in libssh. A remote attacker, by controlling client configuration files or knownhosts files, could craft specific hostnames that when processed by the matchpattern function can lead to inefficient regular expression backtracking. This can cause timeouts and resource exhaustion,...

Regular Expression Denial of Service (ReDoS)

Overview Affected versions of this package are vulnerable to Regular Expression Denial of Service ReDoS when multiple wildcards are used in combination with at least one parameter. An attacker can cause excessive resource consumption and application unresponsiveness by supplying specially crafted...

Regular Expression Denial of Service (ReDoS)

Overview Affected versions of this package are vulnerable to Regular Expression Denial of Service ReDoS when multiple wildcards are used in combination with at least one parameter. An attacker can cause excessive resource consumption and application unresponsiveness by supplying specially crafted...

CVE-2026-0967 Libssh: libssh: denial of service via inefficient regular expression processing

A flaw was found in libssh. A remote attacker, by controlling client configuration files or knownhosts files, could craft specific hostnames that when processed by the matchpattern function can lead to inefficient regular expression backtracking. This can cause timeouts and resource exhaustion,...

CVE-2026-0967 Libssh: libssh: denial of service via inefficient regular expression processing

A flaw was found in libssh. A remote attacker, by controlling client configuration files or knownhosts files, could craft specific hostnames that when processed by the matchpattern function can lead to inefficient regular expression backtracking. This can cause timeouts and resource exhaustion,...

CVE-2026-0967

A flaw was found in libssh. A remote attacker, by controlling client configuration files or knownhosts files, could craft specific hostnames that when processed by the matchpattern function can lead to inefficient regular expression backtracking. This can cause timeouts and resource exhaustion,...

CVE-2026-0967

A flaw was found in libssh. A remote attacker, by controlling client configuration files or knownhosts files, could craft specific hostnames that when processed by the matchpattern function can lead to inefficient regular expression backtracking. This can cause timeouts and resource exhaustion,...

CVE-2026-4923

Impact: When using multiple wildcards, combined with at least one parameter, a regular expression can be generated that is vulnerable to ReDoS. This backtracking vulnerability requires the second wildcard to be somewhere other than the end of the path. Unsafe examples: /foo-bar-:baz /a-:b-c-:d...

CVE-2026-4923

Impact: When using multiple wildcards, combined with at least one parameter, a regular expression can be generated that is vulnerable to ReDoS. This backtracking vulnerability requires the second wildcard to be somewhere other than the end of the path. Unsafe examples: /foo-bar-:baz /a-:b-c-:d...

UBUNTU-CVE-2026-4923

Impact: When using multiple wildcards, combined with at least one parameter, a regular expression can be generated that is vulnerable to ReDoS. This backtracking vulnerability requires the second wildcard to be somewhere other than the end of the path. Unsafe examples: /foo-bar-:baz /a-:b-c-:d...

CVE-2026-4923

Impact: When using multiple wildcards, combined with at least one parameter, a regular expression can be generated that is vulnerable to ReDoS. This backtracking vulnerability requires the second wildcard to be somewhere other than the end of the path. Unsafe examples: /foo-bar-:baz /a-:b-c-:d...

CVE-2026-4923

The CVE-2026-4923 entry describes a ReDoS vulnerability in path-to-regexp when using multiple wildcards with at least one parameter, where a backtracking-regex can be generated if the second wildcard is not at the path end. Affects are demonstrated with unsafe and safe examples, and the recommend...