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

> Unauthenticated attackers can read and modify lesson answers in OpenAEV by exploiting missing authorization checks on player API endpoints.

- **Severity:** High 8.2 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 14 Oct 2026
- **Updated:** 15 Oct 2026
- **Also known as:** GHSA-47wr-wp4h-8v3f

## What is CVE-2026-71854?

CVE-2026-71854 is a high-severity missing authorization vulnerability in OpenAEV-Platform openaev, published on 14 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### 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.

Weakness: CWE-862 (Missing Authorization), CWE-639 (Authorization Bypass Through User-Controlled Key), CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2026-71854?


## How do I fix CVE-2026-71854?

No fix has been published for CVE-2026-71854 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-71854 being exploited?

There is no known exploitation of CVE-2026-71854 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-71854 and fix it if it is affected.

What it is: CVE-2026-71854 is a high-severity missing authorization vulnerability in OpenAEV-Platform openaev, published on 14 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-71854 in the wild and no public exploit code.

Affected product: OpenAEV-Platform openaev. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-71854/ (Markdown: https://insights.sbomify.com/CVE-2026-71854/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-71854
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-71854
- OSV: https://osv.dev/vulnerability/CVE-2026-71854

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-71854/
Summaries are generated and may contain mistakes; the official description above is the record.