CVE WatchSep 4, 2026

CVE-2026-85667

xiaobei through 5.5.2 fails to implement authentication or signature validation on webhook endpoints, allowing unauthenticated attackers to

CVSS

9.1

Critical

EPSS

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KEV

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Exploit Today

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0-100

Published: Sep 4, 2026 · Last modified: Sep 4, 2026 · CWE-306

EPSS · 30d

Not enough EPSS history yet.

Technical 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.

Official references

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