OpenClaw is vulnerable to unauthenticated resource exhaustion through its voice call webhook handling
## Summary Voice Call webhook handling buffered request bodies before provider signature checks, enabling bounded unauthenticated resource exhaustion. ## Affected Packages / Versions - Package: `openclaw` (npm) - Affected: < 2026.3.22 - Fixed: >= 2026.3.22 - Latest released tag checked: `v2026.3.23-2` (`630f1479c44f78484dfa21bb407cbe6f171dac87`) - Latest published npm version checked: `2026.3.23-2` ## Fix Commit(s) - `651dc7450b68a5396a009db78ef9382633707ead` ## Release Status The fix shipped in `v2026.3.22` and remains present in `v2026.3.23` and `v2026.3.23-2`. ## Code-Level Confirmation - extensions/voice-call/src/webhook.ts now enforces header gating and shared pre-auth body caps before reading attacker-controlled request bodies. - extensions/voice-call/src/webhook.test.ts ships regression coverage for missing-signature, oversize, and timeout pre-auth webhook cases. OpenClaw thanks @SEORY0 for reporting.
beschreibt (1)
Zugehörige CVEs.
| ID | Schweregrad | ausnutzbar | ||
|---|---|---|---|---|
| CVE-2026-35626US | — | — | ||
OpenClaw before 2026.3.22 contains an unauthenticated resource exhaustion vulnerability in voice call webhook handling that buffers request bodies before provider signature checks.… | ||||
Referenzen
Externe Belege — Patches, Meldungen, Analysen.
- https://github.com/openclaw/openclawPACKAGE
- https://github.com/openclaw/openclaw/commit/630f1479c44f78484dfa21bb407cbe6f171dac87WEB
- https://github.com/openclaw/openclaw/commit/651dc7450b68a5396a009db78ef9382633707eadWEB
- https://github.com/openclaw/openclaw/security/advisories/GHSA-rm59-992w-x2mvWEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-35626ADVISORY
- https://www.vulncheck.com/advisories/openclaw-unauthenticated-resource-exhaustion-via-voice-call-webhookWEB
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