# CVE-2025-25063: Cross-site scripting in backdrop

> An attacker can execute arbitrary scripts in a victim's browser by uploading a crafted SVG image and tricking them into viewing it directly.

- **Severity:** Medium 4.4 (`CVSS:3.1/AV:N/AC:H/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:** 3 Feb 2025
- **Updated:** 12 Feb 2025
- **Also known as:** GHSA-cfr9-prm9-crgr

## What is CVE-2025-25063?

CVE-2025-25063 is a medium-severity cross-site scripting vulnerability in backdropcms backdrop, published on 3 Feb 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

An XSS issue was discovered in Backdrop CMS 1.28.x before 1.28.5 and 1.29.x before 1.29.3. It does not sufficiently validate uploaded SVG images to ensure they do not contain potentially dangerous SVG tags. SVG images can contain clickable links and executable scripting, and using a crafted SVG, it is possible to execute scripting in the browser when an SVG image is viewed. This issue is mitigated by the attacker needing to be able to upload SVG images, and that Backdrop embeds all uploaded SVG images within <img> tags, which prevents scripting from executing. The SVG must be viewed directly by its URL in order to run any embedded scripting.

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

## Which versions are affected by CVE-2025-25063?

It affects 1 product.


Products: Backdropcms Backdrop Cms.

## How do I fix CVE-2025-25063?

No fix has been published for CVE-2025-25063 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-25063 being exploited?

There is no known exploitation of CVE-2025-25063 in the wild and no public exploit code.

## Other vulnerabilities in backdropcms backdrop

- [CVE-2019-14771](https://insights.sbomify.com/CVE-2019-14771/): File upload in n/a (critical 9.8)
- [CVE-2022-42092](https://insights.sbomify.com/CVE-2022-42092/): Backdrop CMS Unrestricted File Upload vulnerability (high 7.2)
- [CVE-2019-19902](https://insights.sbomify.com/CVE-2019-19902/): File upload in n/a (high 7.2)
- [CVE-2025-63828](https://insights.sbomify.com/CVE-2025-63828/): Backdrop CMS Host Header Injection vulnerability (medium 6.1)
- [CVE-2025-44141](https://insights.sbomify.com/CVE-2025-44141/): Cross-site scripting in n/a (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-25063 and fix it if it is affected.

What it is: CVE-2025-25063 is a medium-severity cross-site scripting vulnerability in backdropcms backdrop, published on 3 Feb 2025. 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-2025-25063 in the wild and no public exploit code.

Affected product: backdropcms backdrop. 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-2025-25063/ (Markdown: https://insights.sbomify.com/CVE-2025-25063/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-25063
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-25063
- OSV: https://osv.dev/vulnerability/CVE-2025-25063

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-25063/
Summaries are generated and may contain mistakes; the official description above is the record.