OpenClaw has ReDoS and regex injection via unescaped Feishu mention metadata in RegExp construction
## Summary `extensions/feishu/src/bot.ts` constructed `new RegExp()` directly from Feishu mention metadata (`mention.name`, `mention.key`) in `stripBotMention()` without escaping regex metacharacters. ## Affected Packages / Versions - Package: npm `openclaw` - Affected versions: `<= 2026.2.17` - First affected release: `2026.2.6` - Patched version: `2026.2.19` ## Impact - ReDoS: crafted nested-quantifier patterns in mention metadata can trigger catastrophic backtracking and block message processing. - Regex injection: metacharacters in mention metadata can remove unintended message content before it is sent to the model. ## Fix Commit(s) - `7e67ab75cc2f0e93569d12fecd1411c2961fcc8c` - `74268489137510b6f6349919d1e197b17290d92c` Thanks @allsmog for reporting.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-22178US | high8.2 | — | ||
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 o… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/openclaw/openclawPACKAGE
- https://github.com/openclaw/openclaw/commit/74268489137510b6f6349919d1e197b17290d92cWEB
- https://github.com/openclaw/openclaw/commit/7e67ab75cc2f0e93569d12fecd1411c2961fcc8cWEB
- https://github.com/openclaw/openclaw/security/advisories/GHSA-c6hr-w26q-c636WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-22178ADVISORY
- https://www.vulncheck.com/advisories/openclaw-redos-and-regex-injection-via-unescaped-feishu-mention-metadataWEB
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