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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
OpenClaw OpenClaw unaffected
Version Status Constraints
0 affected
< 2026.2.19
2026.2.19 unaffected
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No data.

No data.

No data.

Project Subscriptions

Vendors Products
Openclaw Subscribe
Openclaw Subscribe
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-c6hr-w26q-c636 OpenClaw has ReDoS and regex injection via unescaped Feishu mention metadata in RegExp construction
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/openclaw/openclaw/commit/74268489137510b6f6349919d1e197b17290d92c cve-icon cve-icon
https://github.com/openclaw/openclaw/commit/7e67ab75cc2f0e93569d12fecd1411c2961fcc8c cve-icon cve-icon
https://github.com/openclaw/openclaw/security/advisories/GHSA-c6hr-w26q-c636 cve-icon cve-icon
https://www.vulncheck.com/advisories/openclaw-redos-and-regex-injection-via-unescaped-feishu-mention-metadata cve-icon cve-icon
History

Wed, 18 Mar 2026 02:15:00 +0000

Type Values Removed Values Added
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.
Title OpenClaw < 2026.2.19 - ReDoS and Regex Injection via Unescaped Feishu Mention Metadata
First Time appeared Openclaw
Openclaw openclaw
Weaknesses CWE-1333
CPEs cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*
Vendors & Products Openclaw
Openclaw openclaw
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L'}

cvssV4_0

{'score': 6.9, 'vector': '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-03-18T01:34:22.432Z

Reserved: 2026-01-06T16:47:17.181Z

Link: CVE-2026-22178

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-18T02:16:22.160

Modified: 2026-03-18T02:16:22.160

Link: CVE-2026-22178

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses