CVE-2026-85667
CRITICAL
NVD
CVSS Score
9.1
Severity
CRITICAL
Published
Sep 04, 2026
Vendor
unknown
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.