CVE-2026-35626 json
OpenClaw < 2026.3.22 - Unauthenticated Resource Exhaustion via Voice Call Webhook
published 2026-03-26 7 mo ago modified 2026-06-23 4 mo ago also GHSA-rm59-992w-x2mv , EUVD-2026-21110
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 44%
- public exploits
- 0
- none known
Summary
OpenClaw before 2026.3.22 contains an unauthenticated resource exhaustion vulnerability in voice call webhook handling that buffers request bodies before provider signature checks. Attackers can send large or malicious webhook requests to exhaust server resources without authentication by bypassing signature validation.
Patch / fix
- npm openclaw 2026.3.22
- OpenClaw OpenClaw 2026.3.22
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 6 mo ago
Exploit prediction
0.51% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).
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:N/VA:L/SC:N/SI:N/SA:N |
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| CNA | 4.0 | 6.9 | 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/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 |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | openclaw | <2026.3.22 |
2026.3.22 |
Affected products
- OpenClaw OpenClaw
Classification
References
-
github.com
/openclaw/openclaw/commit/630f1479c44f78484dfa21bb407cbe6f171dac87
patch, web
-
github.com
/openclaw/openclaw/commit/651dc7450b68a5396a009db78ef9382633707ead
patch, web
-
github.com
/openclaw/openclaw/security/advisories/GHSA-rm59-992w-x2mv
vendor-advisory, web
-
vulncheck.com
/advisories/openclaw-unauthenticated-resource-exhaustion-via-voice-call-webhook
third-party-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2026-35626
advisory
-
github.com
/openclaw/openclaw
package
Sources
- CVE List CVE-2026-35626
- GitHub Advisory GHSA-rm59-992w-x2mv
- NVD CVE-2026-35626
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