CVE-2026-22178

OpenClaw < 2026.2.19 - ReDoS and Regex Injection via Unescaped Feishu Mention Metadata

State: Published
Severity: 6.9 Medium
Published: Mar 18, 2026
Updated: Jun 23, 2026
Reserved: Jan 6, 2026

Description

OpenClaw versions prior to 2026.2.19 construct RegExp objects directly from unescaped Feishu mention metadata in the stripBotMention function, allowing regex injection and denial of service. Attackers can craft nested-quantifier patterns or metacharacters in mention metadata to trigger catastrophic backtracking, block message processing, or remove unintended content before model processing.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N	VulnCheck
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L	VulnCheck

Weaknesses

CWE-1333

Affected Products

Product	Versions
OpenClawOpenClaw	before 2026.2.19Affected 2026.2.19Not affected

References

GitHub Security Advisory (GHSA-c6hr-w26q-c636)vendor-advisory
Patch Commit #1patch
Patch Commit #2patch
VulnCheck Advisory: OpenClaw < 2026.2.19 - ReDoS and Regex Injection via Unescaped Feishu Mention Metadatathird-party-advisory

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