CVE-2026-22178
OpenClaw has ReDoS and regex injection via unescaped Feishu mention metadata in RegExp construction
Description
## 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.
How to fix CVE-2026-22178
To remediate CVE-2026-22178, upgrade the affected package to a fixed version below.
- —upgrade to 2026.2.19 or later
Is CVE-2026-22178 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 2026.2.19
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N |