| Component | OpenClaw |
| Severity | medium (CVSS 6.5) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L |
| Published (NVD) | 2026-03-18 |
| Last modified | 2026-06-17 |
| Affected versions | openclaw < 2026.2.19 |
| Fixed in | 2026.2.19 |
| Weakness | CWE-1333 |
| CISA KEV | not listed |
NVD 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.
What to do
- Upgrade OpenClaw to
2026.2.19or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-22178
- https://github.com/openclaw/openclaw/security/advisories/GHSA-c6hr-w26q-c636
- https://github.com/openclaw/openclaw/commit/74268489137510b6f6349919d1e197b17290d92c
- https://github.com/openclaw/openclaw/commit/7e67ab75cc2f0e93569d12fecd1411c2961fcc8c
- https://www.vulncheck.com/advisories/openclaw-redos-and-regex-injection-via-unescaped-feishu-mention-metadata
Read more
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