# CVE-2026-35665

## Summary

- **CVE ID:** CVE-2026-35665
- **Severity:** MEDIUM
- **CVSS Score:** 6.9 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N)
- **CWE:** CWE-405
- **Published:** Apr 10, 2026
- **Last Modified:** Jun 23, 2026

## 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 Products

- OpenClaw — OpenClaw (0)
- OpenClaw — OpenClaw (2026.3.24)

## References

- [CNA](https://github.com/openclaw/openclaw/security/advisories/GHSA-w6m8-cqvj-pg5v)
- [CNA](https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-feishu-webhook-pre-auth-body-parsing)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.33%
- **EPSS Percentile:** 25.6

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._