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.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
openclawnpm | < 2026.3.24 | 2026.3.24 |
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
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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