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VULNERABILITIES

CVE-2026-35665 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/openclaw/openclaw/security/advisories/GHSA-w6m8-cqvj-pg5v [email protected]ExploitVendor Advisory
https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-feishu-webhook-pre-auth-body-parsing [email protected]Third Party Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-405Asymmetric Resource Consumption (Amplification)[email protected]

Affected Products

ProductVersions
openclaw openclaw
< 2026.3.24

CPE

  • cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-35665
NVD Published Date:
Apr 10, 2026
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2026-35665 Details - Not Deferred