CVE-2026-22178 json
OpenClaw < 2026.2.19 - ReDoS and Regex Injection via Unescaped Feishu Mention Metadata
published 8mo ago modified 4mo ago also GHSA-c6hr-w26q-c636 , EUVD-2026-12722
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 26%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- npm openclaw 2026.2.19
- OpenClaw OpenClaw 2026.2.19
Is CVE-2026-22178 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 7mo ago
Exploit prediction
0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 6.9 | 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 |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L |
| CNA | 4.0 | 6.9 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | openclaw | <2026.2.19 |
2026.2.19 |
Affected products
- OpenClaw OpenClaw
Classification
- Weakness
-
- CWE-1333 Inefficient Regular Expression Complexity
References
-
github.com
/openclaw/openclaw/commit/7e67ab75cc2f0e93569d12fecd1411c2961fcc8c
patch, web
-
github.com
/openclaw/openclaw/commit/74268489137510b6f6349919d1e197b17290d92c
patch, web
-
github.com
/openclaw/openclaw/security/advisories/GHSA-c6hr-w26q-c636
vendor-advisory, web
-
vulncheck.com
/advisories/openclaw-redos-and-regex-injection-via-unescaped-feishu-mention-metadata
third-party-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2026-22178
advisory
-
github.com
/openclaw/openclaw
package
Sources
- CVE List CVE-2026-22178
- GitHub Advisory GHSA-c6hr-w26q-c636
- NVD CVE-2026-22178
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.