# CVE-2021-24739: Logo Carousel < 3.4.2 - Unauthorised Private Post Access

> Contributors can access private posts from other users via the Logo Carousel plugin's duplication feature, exposing sensitive content.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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:** 21 Dec 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-25jm-89cm-8q44

## What is CVE-2021-24739?

CVE-2021-24739 is a high-severity missing authorization vulnerability in Unknown Logo Carousel – Logo Slider, Logo Showcase, and Clients Logo Gallery, published on 21 Dec 2021. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The Logo Carousel WordPress plugin before 3.4.2 allows users with a role as low as Contributor to duplicate and view arbitrary private posts made by other users via the Carousel Duplication feature

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2021-24739?

It affects 1 product.


Products: Shapedplugin Logo Carousel.

## How do I fix CVE-2021-24739?

No fix has been published for CVE-2021-24739 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-24739 being exploited?

There is no known exploitation of CVE-2021-24739 in the wild and no public exploit code.

## Other vulnerabilities in Unknown Logo Carousel – Logo Slider, Logo Showcase, and Clients Logo Gallery

- [CVE-2021-24738](https://insights.sbomify.com/CVE-2021-24738/): Logo Carousel < 3.4.2 - Contributor+ Stored Cross-Site Scripting (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-24739 and fix it if it is affected.

What it is: CVE-2021-24739 is a high-severity missing authorization vulnerability in Unknown Logo Carousel – Logo Slider, Logo Showcase, and Clients Logo Gallery, published on 21 Dec 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-2021-24739 in the wild and no public exploit code.

Affected product: Unknown Logo Carousel – Logo Slider, Logo Showcase, and Clients Logo Gallery. 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-2021-24739/ (Markdown: https://insights.sbomify.com/CVE-2021-24739/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-24739
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-24739
- OSV: https://osv.dev/vulnerability/CVE-2021-24739

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-24739/
Summaries are generated and may contain mistakes; the official description above is the record.