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  5. CVE-2026-35646

CVE-2026-35646: OpenClaw: Synology Chat Webhook Pre-Auth Rate-Limit Bypass Enables Brute-Force Guessing of Webhook Token

March 29, 2026 (updated April 10, 2026)

Synology Chat Webhook Pre-Auth Rate-Limit Bypass Enables Brute-Force Guessing of Weak Webhook Token

References

  • github.com/advisories/GHSA-mf5g-6r6f-ghhm
  • github.com/openclaw/openclaw
  • github.com/openclaw/openclaw/commit/0b4d07337467f4d40a0cc1ced83d45ceaec0863c
  • github.com/openclaw/openclaw/security/advisories/GHSA-mf5g-6r6f-ghhm
  • nvd.nist.gov/vuln/detail/CVE-2026-35646
  • www.vulncheck.com/advisories/openclaw-pre-authentication-rate-limit-bypass-in-webhook-token-validation

Code Behaviors & Features

Detect and mitigate CVE-2026-35646 with GitLab Dependency Scanning

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Affected versions

All versions before 2026.3.28

Fixed versions

  • 2026.3.28

Solution

Upgrade to version 2026.3.28 or above.

Impact 4.8 MEDIUM

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

Learn more about CVSS

Weakness

  • CWE-307: Improper Restriction of Excessive Authentication Attempts
  • CWE-521: Weak Password Requirements

Source file

npm/openclaw/CVE-2026-35646.yml

Spotted a mistake? Edit the file on GitLab.

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