CVE-2026-35640

MEDIUM

5.3

Description

OpenClaw before 2026.3.25 parses JSON request bodies before validating webhook signatures, allowing unauthenticated attackers to force resource-intensive parsing operations. Remote attackers can send malicious webhook requests to trigger denial of service by exhausting server resources through forced JSON parsing before signature rejection.

Details CVE

Score CVSS v3.15.3

SeveriteMEDIUM

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie4/9/2026

Derniere modification4/13/2026

Sourcenvd

Observations honeypot0

Faiblesses (CWE)

CWE-696

References

https://github.com/openclaw/openclaw/commit/5e8cb22176e9235e224be0bc530699261eb60e53(disclosure@vulncheck.com)

https://github.com/openclaw/openclaw/security/advisories/GHSA-3h52-cx59-c456(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-unauthenticated-webhook-request-parsing(disclosure@vulncheck.com)

Correlations IOC

Aucune correlation enregistree

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