CVE-2025-67843

Name: CVE-2025-67843
Creator: NVD / NIST
Published: 2025-12-19T02:16:08.99+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.05%

Last modified Jun 17, 2026

CVE-2025-67843 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 1.05% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.05%

60.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1336

Affected Software

Vendor	Product	Versions
Mintlify	Mintlify	< 2025-11-15

References

https://kibty.town/blog/mintlify/Exploit, Third Party Advisory
https://news.ycombinator.com/item?id=46317098Issue Tracking
https://www.mintlify.com/blog/working-with-security-researchers-november-2025Vendor Advisory
https://www.mintlify.com/docs/changelogRelease Notes
https://kibty.town/blog/mintlify/Exploit, Third Party Advisory

Timeline

Published: Dec 19, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-67843?

How severe is CVE-2025-67843?

CVE-2025-67843 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.05% probability of exploitation in the next 30 days.

How do I fix CVE-2025-67843?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-67843?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST