# CVE-2025-67843: Code injection in Mintlify Platform

> Remote attackers can execute arbitrary code via inline JSX expressions in MDX files within the Mintlify Platform rendering engine.

- **Severity:** High 8.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 19 Dec 2025
- **Updated:** 23 Dec 2025
- **Also known as:** GHSA-6p6p-x42g-j3hv

## What is CVE-2025-67843?

CVE-2025-67843 is a high-severity code injection vulnerability in Mintlify Platform, published on 19 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A Server-Side Template Injection (SSTI) vulnerability in the MDX Rendering Engine in Mintlify Platform before 2025-11-15 allows remote attackers to execute arbitrary code via inline JSX expressions in an MDX file.

Weakness: CWE-1336 (Improper Neutralization of Special Elements Used in a Template Engine)

## Which versions are affected by CVE-2025-67843?

It affects 1 product.


Products: Mintlify Mintlify.

## How do I fix CVE-2025-67843?

No fix has been published for CVE-2025-67843 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-67843 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-67843 exists.

## Other vulnerabilities in Mintlify Platform

- [CVE-2025-67842](https://insights.sbomify.com/CVE-2025-67842/): Cross-site scripting in Mintlify Platform (medium 6.4)
- [CVE-2025-67845](https://insights.sbomify.com/CVE-2025-67845/): Path traversal in Mintlify Platform (medium 6.4)
- [CVE-2025-67844](https://insights.sbomify.com/CVE-2025-67844/): Missing authorization in Mintlify Platform (medium 5.0)
- [CVE-2025-67846](https://insights.sbomify.com/CVE-2025-67846/): Security feature bypass in Mintlify Platform (medium 4.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-67843 and fix it if it is affected.

What it is: CVE-2025-67843 is a high-severity code injection vulnerability in Mintlify Platform, published on 19 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-67843 exists.

Affected product: Mintlify Platform. 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-2025-67843/ (Markdown: https://insights.sbomify.com/CVE-2025-67843/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-67843
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-67843
- OSV: https://osv.dev/vulnerability/CVE-2025-67843

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-67843/
Summaries are generated and may contain mistakes; the official description above is the record.