# CVE-2025-7969: Markdown-it 14.1.0 - Cross-site scripting (XSS)

> Cross-site scripting vulnerability in markdown-it allows attackers to inject malicious scripts into web pages rendered by the library.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 21 Aug 2025
- **Updated:** 3 Dec 2025
- **Also known as:** DEBIAN-CVE-2025-7969, GHSA-vgm8-mvfh-rj89, UBUNTU-CVE-2025-7969

## What is CVE-2025-7969?

CVE-2025-7969 is a medium-severity cross-site scripting vulnerability in markdown-it, published on 21 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in markdown-it allows Cross-Site Scripting (XSS). This vulnerability is associated with program files lib/renderer.mjs.

This issue affects markdown-it: 14.1.0. NOTE: the Supplier does not consider this issue to be a vulnerability.

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

## Which versions are affected by CVE-2025-7969?

It affects 1 product.


Products: Markdown-It Project Markdown-It.

## How do I fix CVE-2025-7969?

No fix has been published for CVE-2025-7969 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-7969 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-7969 exists.

## Other vulnerabilities in markdown-it

- [CVE-2026-2327](https://insights.sbomify.com/CVE-2026-2327/): markdown-it is has a Regular Expression Denial of Service (ReDoS) (medium 6.9)
- [CVE-2026-48988](https://insights.sbomify.com/CVE-2026-48988/): markdown-it: Quadratic complexity DoS in smartquotes rule via replaceAt string operations (medium 5.3)
- [CVE-2022-21670](https://insights.sbomify.com/CVE-2022-21670/): Uncontrolled Resource Consumption in markdown-it (medium 5.3)
- [CVE-2015-3295](https://insights.sbomify.com/CVE-2015-3295/): Cross-site scripting in n/a (medium 5.3)
- [CVE-2015-10005](https://insights.sbomify.com/CVE-2015-10005/): markdown-it html_re.js redos (low 3.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-7969 and fix it if it is affected.

What it is: CVE-2025-7969 is a medium-severity cross-site scripting vulnerability in markdown-it, published on 21 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-7969 exists.

Affected product: markdown-it. 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-2025-7969/ (Markdown: https://insights.sbomify.com/CVE-2025-7969/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-7969
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-7969
- OSV: https://osv.dev/vulnerability/CVE-2025-7969

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-7969/
Summaries are generated and may contain mistakes; the official description above is the record.