Medium

OpenClaw has ReDoS and regex injection via unescaped Feishu mention metadata in RegExp construction

  • Disclosed: 02.03.2026
  • Updated: 11.10.2026 10:22

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.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
npm package openclaw < 2026.2.19 2026.2.19

References

CVSS score -
CVSS vector
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
Weakness (CWE)
CWE-1333
Platform
npm
Package
openclaw
Disclosed
02.03.2026
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-c6hr-w26q-c636 - CC BY 4.0

Vulnerability history: openclaw

All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (588) in the archive
Total entries
588
First → latest
02.2026 07.2026
Without a fix
9
Exploited in attacks
0

Severity breakdown

  • Critical 20
  • High 215
  • Medium 299
  • Low 54

Disclosures per year

  1. 2026: 588
Severity:
  1. OpenClaw has ReDoS and regex injection via unescaped Feishu mention metadata in RegExp construction this entry
    Medium CVE-2026-22178 < 2026.2.19 2026.2.19
  2. High · 8.8 CVE-2026-53811 < 2026.5.7 2026.5.7
  3. High · 8.8 CVE-2026-53806 < 2026.5.12 2026.5.12
  4. High · 7.8 CVE-2026-53813 < 2026.4.25 2026.4.25
  5. High · 7.5 CVE-2026-53834 < 2026.4.27 2026.4.27
  6. Critical CVE-2026-34507 < 2026.4.29 2026.4.29
  7. High CVE-2026-53823 < 2026.5.3 2026.5.3
  8. High · 8.4 CVE-2026-53814 < 2026.5.20 2026.5.20
  9. High · 6.5 CVE-2026-53815 < 2026.5.19 2026.5.19
  10. High · 8.1 CVE-2026-53849 < 2026.5.7 2026.5.7
  11. High · 8.1 CVE-2026-53857 < 2026.5.3 2026.5.3
  12. High · 8.1 CVE-2026-53866 < 2026.5.12 2026.5.12
  13. High · 8.1 CVE-2026-53864 < 2026.5.26 2026.5.26
  14. Critical · 9.8 CVE-2026-44109 < 2026.4.15 2026.4.15
  15. Critical · 8.1 CVE-2026-43585 < 2026.4.15 2026.4.15
  16. High · 8.8 CVE-2026-43530 >= 2026.2.23, < 2026.4.12 2026.4.12
  17. High · 8.8 CVE-2026-42434 >= 2026.4.5, < 2026.4.10 2026.4.10
  18. High · 7.5 CVE-2026-42437 >= 2026.4.9, < 2026.4.10 2026.4.10
  19. High CVE-2026-41393 < 2026.3.31 2026.3.31
  20. Critical · 8.2 CVE-2026-41296 < 2026.3.31 2026.3.31
  21. High · 8.8 CVE-2026-41352 < 2026.3.31 2026.3.31
  22. High · 7.8 CVE-2026-41396 < 2026.3.31 2026.3.31
Show more (20) Showing 81 of 236

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