# CVE-2025-63872: Cross-site scripting in n/a

> Attackers can execute arbitrary JavaScript via model-generated SVG content in DeepSeek V3.2, potentially compromising user sessions.

- **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:** 2 Dec 2025
- **Updated:** 2 Dec 2025
- **Also known as:** GHSA-6qf7-f2m4-35xq

## What is CVE-2025-63872?

CVE-2025-63872 is a medium-severity cross-site scripting vulnerability in n/a, published on 2 Dec 2025. 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

DeepSeek V3.2 has a Cross Site Scripting (XSS) vulnerability, which allows JavaScript execution through model-generated SVG content.

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

## Which versions are affected by CVE-2025-63872?

It affects 1 product.


Products: Deepseek Deepseek.

## How do I fix CVE-2025-63872?

No fix has been published for CVE-2025-63872 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-63872 being exploited?

There is no known exploitation of CVE-2025-63872 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-63872 and fix it if it is affected.

What it is: CVE-2025-63872 is a medium-severity cross-site scripting vulnerability in n/a, published on 2 Dec 2025. 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-2025-63872 in the wild and no public exploit code.

Affected product: n/a. 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-2025-63872/ (Markdown: https://insights.sbomify.com/CVE-2025-63872/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-63872
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-63872
- OSV: https://osv.dev/vulnerability/CVE-2025-63872

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-63872/
Summaries are generated and may contain mistakes; the official description above is the record.