# CVE-2021-24781: Image Source Control < 2.3.1 - Contributor+ Arbitrary Post Meta Value Change

> Contributors can modify arbitrary post metadata in the Image Source Control WordPress plugin due to missing authorization checks.

- **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:** 1 Nov 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-jr25-57j4-8x4x

## What is CVE-2021-24781?

CVE-2021-24781 is a medium-severity missing authorization vulnerability in Unknown Image Source Control, published on 1 Nov 2021. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The Image Source Control WordPress plugin before 2.3.1 allows users with a role as low as Contributor to change arbitrary post meta fields of arbitrary posts (even those they should not be able to edit)

Weakness: CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2021-24781?

It affects 1 product.


Products: Imagesourcecontrol Image Source Control.

## How do I fix CVE-2021-24781?

No fix has been published for CVE-2021-24781 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-24781 being exploited?

There is no known exploitation of CVE-2021-24781 in the wild and no public exploit code.

## Other vulnerabilities in Unknown Image Source Control

- [CVE-2023-52187](https://insights.sbomify.com/CVE-2023-52187/): WordPress Image Source Control Plugin <= 2.17.0 is vulnerable to Sensitive Data Exposure (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-24781 and fix it if it is affected.

What it is: CVE-2021-24781 is a medium-severity missing authorization vulnerability in Unknown Image Source Control, published on 1 Nov 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-24781 in the wild and no public exploit code.

Affected product: Unknown Image Source Control. 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-2021-24781/ (Markdown: https://insights.sbomify.com/CVE-2021-24781/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-24781
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-24781
- OSV: https://osv.dev/vulnerability/CVE-2021-24781

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-24781/
Summaries are generated and may contain mistakes; the official description above is the record.