# CVE-2024-2231: Himer - Social Questions and Answers < 2.1.1 - Subscriber+ Private Group Joining via IDOR

> Authenticated users can join private groups without permission due to missing authorization checks in the Himer plugin.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A: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:** 3 Jul 2024
- **Updated:** 9 Aug 2024
- **Also known as:** GHSA-459h-qwrj-j9gc

## What is CVE-2024-2231?

CVE-2024-2231 is a medium-severity missing authorization vulnerability in Unknown Himer, published on 3 Jul 2024. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The  allows any authenticated user to join a private group due to a missing authorization check on a function

Weakness: CWE-863 (Incorrect Authorization)

## Which versions are affected by CVE-2024-2231?

It affects 1 product.


Products: 2code Himer.

## How do I fix CVE-2024-2231?

No fix has been published for CVE-2024-2231 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-2231 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-2231 exists.

## Other vulnerabilities in Unknown Himer

- [CVE-2024-2232](https://insights.sbomify.com/CVE-2024-2232/): Himer - Social Questions and Answers < 2.1.3 - CSRF While Sending the Invites (high 8.1)
- [CVE-2024-2040](https://insights.sbomify.com/CVE-2024-2040/): Himer - Social Questions and Answers < 2.1.1 - Arbitrary Group Joining via CSRF (medium 6.3)
- [CVE-2024-2233](https://insights.sbomify.com/CVE-2024-2233/): Himer - Social Questions and Answers < 2.1.1 - Multiple CSRF on the Group Section (medium 6.3)
- [CVE-2024-2234](https://insights.sbomify.com/CVE-2024-2234/): Himer - Social Questions and Answers < 2.1.1 - Contributor+ Stored XSS (medium 6.3)
- [CVE-2024-2235](https://insights.sbomify.com/CVE-2024-2235/): Himer - Social Questions and Answers < 2.1.1 - Bypass Poll Voting Restrictions via CSRF (medium 6.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-2231 and fix it if it is affected.

What it is: CVE-2024-2231 is a medium-severity missing authorization vulnerability in Unknown Himer, published on 3 Jul 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-2231 exists.

Affected product: Unknown Himer. 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-2024-2231/ (Markdown: https://insights.sbomify.com/CVE-2024-2231/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-2231
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-2231
- OSV: https://osv.dev/vulnerability/CVE-2024-2231

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-2231/
Summaries are generated and may contain mistakes; the official description above is the record.