CVE-2025-67843CWE-1336

A Server-Side Template Injection (SSTI) vulnerability in the MDX Rendering Engine in Mintlify Platform before 2025-11-15 allows remote attackers to execute…

High · published December 19, 2025

CVSS v3.1
8.3
EPSS
1%
Percentile
65.6
In the wild
Unconfirmed
What it is

⚡ A crafty inline JSX expression is all it takes to exploit this vulnerability in the Mintlify Platform! Think of it like a restaurant where a diner can change their order without the kitchen double-checking it. One sneaky request for something different could lead to a dish that’s not just unexpected—it could be downright harmful! If attackers exploit this vulnerability, they can execute arbitrary code on the server, potentially leading to data theft, unauthorized access, or even a complete system takeover. The fallout could be absolutely devastating for anyone relying on this engine—you definitely don’t want a hostile chef in your kitchen!

Put simply

Think of it like a restaurant where a diner can change their order without the kitchen double-checking it. One sneaky request for something different could lead to a dish that’s not just unexpected—it could be downright harmful! This Server-Side Template Injection (SSTI) vulnerability in the MDX Rendering Engine allows remote attackers to inject and execute arbitrary code through unvalidated inline JSX expressions in an MDX file.

What to do

If attackers exploit this vulnerability, they can execute arbitrary code on the server, potentially leading to data theft, unauthorized access, or even a complete system takeover. The fallout could be absolutely devastating for anyone relying on this engine—you definitely don’t want a hostile chef in your kitchen! Update your Mintlify Platform to the latest version released after November 15, 2025. Additionally, review and sanitize any MDX files to ensure no unsafe JSX expressions are being used. Regularly audit your templates to bolster your defenses! You've got this! With these steps, you'll secure your platform in no time. 🛡️

The record
Technical detail
CVSS v3.1
8.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
CVSS v4.0
Not supplied
EPSS
0.01109 · 65.6th percentile
Weakness
CWE-1336 · Improper Neutralization of Special Elements Used in a Template Engine
Published
2025-12-19T00:00Z
EPSS history
Timeline
  • 19 DEC 00:00Z
    A Server-Side Template Injection (SSTI) vulnerability in the MDX Rendering Engine in Mintlify Platform before 2025-11-15 allows remote attackers to execute…
    cvelistv5