Medium severity5.3NVD Advisory· Published Apr 10, 2026· Updated Apr 13, 2026
CVE-2026-35665
CVE-2026-35665
Description
OpenClaw before 2026.3.24 contains an incomplete fix for CVE-2026-32011 where the Feishu webhook handler accepts request bodies with permissive limits of 1MB and 30-second timeout before signature verification. An unauthenticated attacker can exhaust server connection resources by sending concurrent slow HTTP POST requests to the Feishu webhook endpoint, blocking legitimate webhook deliveries.
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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 | < 2026.3.24 | 2026.3.24 |
Affected products
2Patches
Vulnerability mechanics
References
5- github.com/openclaw/openclaw/security/advisories/GHSA-w6m8-cqvj-pg5vnvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-w6m8-cqvj-pg5vghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-35665ghsaADVISORY
- www.vulncheck.com/advisories/openclaw-denial-of-service-via-feishu-webhook-pre-auth-body-parsingnvdThird Party AdvisoryWEB
- github.com/openclaw/openclaw/security/advisories/GHSA-x4vp-4235-65hgghsaWEB
News mentions
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