CVE-2026-85667
xiaobei through 5.5.2 Unauthenticated Webhook Message Injection
CVSS Score
9.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-306 |
| Vendor | teamwiseflow |
| Product | xiaobei |
| Published | Sep 4, 2026 |
| Last Updated | Sep 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
TeamWiseFlow / xiaobei
0 ≤ 5.5.2
References
github.com: https://github.com/TeamWiseFlow/xiaobei/issues/440 github.com: https://github.com/TeamWiseFlow/xiaobei github.com: https://github.com/TeamWiseFlow/xiaobei/blob/v5.5.2/awada/awada-server/src/routes/webhook-worktool.ts vulncheck.com: https://www.vulncheck.com/advisories/xiaobei-through-5.5.2-unauthenticated-webhook-message-injection
Credits
George Chen