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CVE-2026-35665
5.3 MEDIUM
- CVSS version: 3.1
- Attack vector (AV): NETWORK
- Attack complexity (AC): LOW
- Privileges required (PR): NONE
- User interaction (UI): NONE
- Scope (S): UNCHANGED
- Confidentiality impact (C): NONE
- Integrity impact (I): NONE
- Availability impact (A): LOW
OpenClaw < 2026.3.24 - Denial of Service via Feishu Webhook Pre-Auth Body Parsing
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.
References
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GitHub Security Advisory (GHSA-w6m8-cqvj-pg5v) third-party-advisory
Affected products
OpenClaw
- ==2026.3.24
- <2026.3.24
Package maintainers
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@mkg20001 Maciej Krüger <mkg20001+nix@gmail.com>
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@chrisportela Chris Portela <chris@chrisportela.com>