Asymmetric Resource Consumption (Amplification) Affecting openclaw package, versions <2026.4.2-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.08% (23rd percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-OPENCLAW-15954389
  • published9 Apr 2026
  • disclosed10 Apr 2026

Introduced: 9 Apr 2026

NewCVE-2026-35665  (opens in a new tab)
CWE-405  (opens in a new tab)

How to fix?

Upgrade Minimos:latest openclaw to version 2026.4.2-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openclaw package and not the openclaw package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1