VULNERABILITY INTELLIGENCE
CVE-2026-85667
CVSS score9.1 CRITICAL
EPSS probability0.69%
CISA KEVNot currently listed
Published2026-09-04
Last modified2026-09-10
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Description
xiaobei through 5.5.2 fails to implement authentication or signature validation on webhook endpoints, allowing unauthenticated attackers to inject arbitrary messages into the agent pipeline. Attackers can publish malicious messages via the /webhook_worktool handler and exploit unvalidated media URL fetching to perform server-side request forgery against internal services.
Weakness classification
- disclosure@vulncheck.com: CWE-306