Vulnerability · Published Oct 14, 2026 · Assigned by GitHub_M
CVE-2026-71854OpenAEV has unauthenticated access and missing object-level authorization on player lessons API
High 8.2
In plain English
A high-severity missing authentication in openaev from OpenAEV-Platform. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| OpenAEV-Platform | openaev | < 2.260622.0 |
Weakness: CWE-306, CWE-639, CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N