# CVE-2026-33398: Authenticated users can read hidden forum posts through `/forum/get_quotes`

> Authenticated users can read hidden forum posts by bypassing ACL checks in the get_quotes endpoint, exposing private content.

- **Severity:** High 7.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Jun 2026
- **Updated:** 2 Jun 2026
- **Also known as:** GHSA-2r6x-cv4f-h8fx

## What is CVE-2026-33398?

CVE-2026-33398 is a high-severity missing authorization vulnerability in NamelessMC Nameless, published on 2 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

NamelessMC is website software for Minecraft servers. In version 2.2.4, `modules/Forum/pages/forum/get_quotes.php` only checks whether the caller is logged in, then reads a post by attacker-controlled `post` ID and returns its content. The backend helper in `modules/Forum/classes/Forum.php` does not enforce forum or topic ACLs. In contrast, the normal topic page in `modules/Forum/pages/forum/view_topic.php` enforces forum visibility and `view_other_topics`. Any low-privileged authenticated user can enumerate post IDs and read content from hidden, private, or staff-only forums. Version 2.2.5 fixes the issue.

Weakness: CWE-285 (Improper Authorization)

## Which versions are affected by CVE-2026-33398?


## How do I fix CVE-2026-33398?

No fix has been published for CVE-2026-33398 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-33398 being exploited?

There is no known exploitation of CVE-2026-33398 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-33398 and fix it if it is affected.

What it is: CVE-2026-33398 is a high-severity missing authorization vulnerability in NamelessMC Nameless, published on 2 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-33398 in the wild and no public exploit code.

Affected product: NamelessMC Nameless. 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-2026-33398/ (Markdown: https://insights.sbomify.com/CVE-2026-33398/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-33398
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-33398
- OSV: https://osv.dev/vulnerability/CVE-2026-33398

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-33398/
Summaries are generated and may contain mistakes; the official description above is the record.