CVE-2026-85667

critical

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.

References

https://www.vulncheck.com/advisories/xiaobei-through-5.5.2-unauthenticated-webhook-message-injection

https://github.com/TeamWiseFlow/xiaobei/issues/440

https://github.com/TeamWiseFlow/xiaobei/blob/v5.5.2/awada/awada-server/src/routes/webhook-worktool.ts

https://github.com/TeamWiseFlow/xiaobei

Details

Source: Mitre, NVD

Published: 2026-09-04

Updated: 2026-09-10

Risk Information

CVSS v2

Base Score: 9.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 9.1

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

Severity: Critical

CVSS v4

Base Score: 9.3

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Severity: Critical

EPSS

EPSS: 0.00383