Medium severity5.3NVD Advisory· Published Apr 9, 2026· Updated Apr 15, 2026
CVE-2026-35640
CVE-2026-35640
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
openclawnpm | < 2026.3.28 | 2026.3.28 |
Affected products
2Patches
Vulnerability mechanics
References
5- github.com/openclaw/openclaw/commit/5e8cb22176e9235e224be0bc530699261eb60e53nvdPatchWEB
- github.com/advisories/GHSA-3h52-cx59-c456ghsaADVISORY
- github.com/openclaw/openclaw/security/advisories/GHSA-3h52-cx59-c456nvdVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-35640ghsaADVISORY
- www.vulncheck.com/advisories/openclaw-denial-of-service-via-unauthenticated-webhook-request-parsingnvdThird Party AdvisoryWEB
News mentions
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