CVE-2026-71854 – OpenAEV has unauthenticated access and missing object-level authorization on player lessons API

​CVE ID :CVE-2026-71854

Published : Oct. 14, 2026, 9:17 p.m. | 30 minutes ago

Description :OpenAEV is an open source platform allowing organizations to plan, schedule and conduct cyber adversary simulation campaign and tests. Prior to version 2.260622.0, on a default installation, the `/api/player/**` lessons endpoints can be called without authentication, and they trust a client-supplied `userId` query parameter without verifying that the caller is that user or a member of the exercise. An unauthenticated client that knows an exercise UUID can read lessons-learned questions and answers (including each answer’s author identity) and create or overwrite answers attributed to an arbitrary user. Version 2.260622.0 contains a patch.

Severity: 8.2 | HIGH

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