# CVE-2021-24386: WP SVG Images < 3.4 - Authenticated (author+) Stored XSS via SVG

> Authenticated authors can upload malicious SVG files to execute cross-site scripting attacks against other users.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 6 Jul 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-9qvq-vg28-xrq7

## What is CVE-2021-24386?

CVE-2021-24386 is a medium-severity cross-site scripting vulnerability in KubiQ WP SVG images, published on 6 Jul 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

The WP SVG images WordPress plugin before 3.4 did not sanitise the SVG files uploaded, which could allow low privilege users such as author+ to upload a malicious SVG and then perform XSS attacks by inducing another user to access the file directly. In v3.4, the plugin restricted such upload to editors and admin, with an option to also allow author to do so. The description of the plugin has also been updated with a security warning as upload of such content is intended.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2021-24386?

It affects 1 product.


Products: Kubiq Wp Svg Images.

## How do I fix CVE-2021-24386?

No fix has been published for CVE-2021-24386 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-24386 being exploited?

There is no known exploitation of CVE-2021-24386 in the wild and no public exploit code.

## Other vulnerabilities in KubiQ WP SVG images

- [CVE-2024-5945](https://insights.sbomify.com/CVE-2024-5945/): WP SVG Images <= 4.3 - Authenticated (Author+) Stored Cross-Site Scripting via SVG (medium 6.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-24386 and fix it if it is affected.

What it is: CVE-2021-24386 is a medium-severity cross-site scripting vulnerability in KubiQ WP SVG images, published on 6 Jul 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-24386 in the wild and no public exploit code.

Affected product: KubiQ WP SVG images. 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-2021-24386/ (Markdown: https://insights.sbomify.com/CVE-2021-24386/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-24386
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-24386
- OSV: https://osv.dev/vulnerability/CVE-2021-24386

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-24386/
Summaries are generated and may contain mistakes; the official description above is the record.