# CVE-2023-2561: Gallery Metabox <= 1.5 - Missing Authorization via gallery_remove

> Subscribers can modify galleries attached to posts and pages due to a missing capability check in the Gallery Metabox plugin.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/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:** 12 Jul 2023
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-h3cv-3fjg-8h4x

## What is CVE-2023-2561?

CVE-2023-2561 is a medium-severity missing authorization vulnerability in billerickson Gallery Metabox, published on 12 Jul 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The Gallery Metabox for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the gallery_remove function in versions up to, and including, 1.5. This makes it possible for subscriber-level attackers to modify galleries attached to posts and pages with this plugin.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2023-2561?

It affects 1 product.


Products: Gallery-Metabox Project Gallery-Metabox.

## How do I fix CVE-2023-2561?

No fix has been published for CVE-2023-2561 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-2561 being exploited?

There is no known exploitation of CVE-2023-2561 in the wild and no public exploit code.

## Other vulnerabilities in billerickson Gallery Metabox

- [CVE-2023-2562](https://insights.sbomify.com/CVE-2023-2562/): Gallery Metabox <= 1.5 - Missing Authorization via refresh_metabox (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-2561 and fix it if it is affected.

What it is: CVE-2023-2561 is a medium-severity missing authorization vulnerability in billerickson Gallery Metabox, published on 12 Jul 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-2561 in the wild and no public exploit code.

Affected product: billerickson Gallery Metabox. 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-2023-2561/ (Markdown: https://insights.sbomify.com/CVE-2023-2561/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-2561
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-2561
- OSV: https://osv.dev/vulnerability/CVE-2023-2561

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-2561/
Summaries are generated and may contain mistakes; the official description above is the record.