GHSA-8f9r-gr6r-x63q: Duplicate Advisory: OpenClaw: Feishu webhook reads and parses unauthenticated request bodies before signature validation
Duplicate Advisory
This advisory has been withdrawn because it is a duplicate of GHSA-3h52-cx59-c456. This link is maintained to preserve external references.
Original 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.
References
- github.com/advisories/GHSA-8f9r-gr6r-x63q
- github.com/openclaw/openclaw/commit/5e8cb22176e9235e224be0bc530699261eb60e53
- github.com/openclaw/openclaw/security/advisories/GHSA-3h52-cx59-c456
- nvd.nist.gov/vuln/detail/CVE-2026-35640
- www.vulncheck.com/advisories/openclaw-denial-of-service-via-unauthenticated-webhook-request-parsing
Code Behaviors & Features
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