CVE-2026-35665

MEDIUM SEVERITY

CVSS Score & Metrics

Base Score

5.3 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L                                    

Vulnerability 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.

Vulnerability Details

Published Date

April 10, 2026

Last Modified

April 13, 2026

CWE ID

CWE-405

Source

NVD

Vendor

OpenClaw

Product

OpenClaw

External References

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

CVE-2026-35665

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

Discussion (0)

Add Comment