CVE-2025-67843

High

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.

SeverityHigh
CVSS8.3
Exploit probability—
ProductMintlify
PublishedDec 19, 2025
First seenDec 19, 2025
Weakness typeCWE-1336CWE-1336

How to fix

Update
  • mintlify mintlify2025-11-15 or later

Affected products

ProductAffected versionsFixed in
mintlify mintlifyv < 2025-11-152025-11-15

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.