CVE Catalog

CVE-2026-71854

HighCVSS 8.2
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.25%

15th percentile - higher than 15% of all known CVEs

Summary

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.

Risk Assessment

An unauthenticated attacker can read confidential lessons-learned content and forge answers on behalf of any user, undermining data integrity and potentially leading to disinformation and confidentiality breaches.

Recommendation

Upgrade OpenAEV to version 2.260622.0 or later, and until then restrict network access to the /api/player/** endpoints.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS