# CVE-2021-24349: Gallery From Files <= 1.6.0 - Reflected Cross-Site Scripting (XSS)

> Attackers can inject malicious scripts via unsanitized filenames in error messages, potentially leading to session hijacking or site compromise.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 14 Jun 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-f672-mxfg-3p82

## What is CVE-2021-24349?

CVE-2021-24349 is a medium-severity cross-site scripting vulnerability in Unknown Gallery from files, published on 14 Jun 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

This Gallery from files WordPress plugin through 1.6.0 gives the functionality of uploading images to the server. But filenames are not properly sanitized before being output in an error message when they have an invalid extension, leading to a reflected Cross-Site Scripting issue. Due to the lack of CSRF check, the attack could also be performed via such vector.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation), CWE-352 (Cross-Site Request Forgery)

## Which versions are affected by CVE-2021-24349?

It affects 1 product.


Products: Gallery From Files Project Gallery From Files.

## How do I fix CVE-2021-24349?

No fix has been published for CVE-2021-24349 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-24349 being exploited?

There is no known exploitation of CVE-2021-24349 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-24349 and fix it if it is affected.

What it is: CVE-2021-24349 is a medium-severity cross-site scripting vulnerability in Unknown Gallery from files, published on 14 Jun 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-24349 in the wild and no public exploit code.

Affected product: Unknown Gallery from files. 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-2021-24349/ (Markdown: https://insights.sbomify.com/CVE-2021-24349/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-24349
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-24349
- OSV: https://osv.dev/vulnerability/CVE-2021-24349

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-24349/
Summaries are generated and may contain mistakes; the official description above is the record.