Critical 9.8Published Dec 19, 2025

CVE-2025-67843A 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 i…

Updated under an hour ago (2026-10-19 08:20 UTC)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 9.8 CRITICAL (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-1336
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

mintlify mintlify mintlify:mintlify	before 2025-11-15	NVD

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.