GitHub Advisoryadvisory · npm

GHSA-3h52-cx59-c456 OpenClaw: Feishu webhook reads and parses unauthenticated request bodies before signature validation

MEDIUM Published 2026-03-29 Modified 2026-04-10 Official page ↗
Aliases
CVE-2026-35640
Ecosystem
npm
Packages
openclaw
Severity
Moderate
CVSS vector
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
Weaknesses
CWE-400
Reviewed
2026-03-29

Affected packages

• npm openclaw: < 2026.3.28 → fixed in 2026.3.28

Description

Summary Feishu webhook reads and parses unauthenticated request bodies before signature validation Affected Packages / Versions • Package: `openclaw` • Affected versions: `<= 2026.3.24` • First patched version: `2026.3.25` • Latest published npm version at verification time: `2026.3.24` Details Feishu webhook handling previously parsed JSON before signature validation, which let unauthenticated callers force full JSON parsing work before rejection. Commit `5e8cb22176e9235e224be0bc530699261eb60e53` reads the raw request body, validates the signature first, and only then parses JSON. Verified vulnerable on tag `v2026.3.24` and fixed on `main` by commit `5e8cb22176e9235e224be0bc530699261eb60e53`. Fix Commit(s) • `5e8cb22176e9235e224be0bc530699261eb60e53`

Related

Alias · CVE (1)

  • CVE-2026-35640 OpenClaw before 2026.3.25 parses JSON request bodies before validating webhook signatures, allowing unauthenticated attackers to force… vulnerability

Weakness · CWE (1)

  • CWE-400 Uncontrolled Resource Consumption weakness

References