CVE-2025-67843Public exploitNetwork attack vector

Authenticated code execution via server-rendered MDX expressions

Published Dec 19, 2025 · Updated Dec 19, 2025

Server-side template injection in Mintlify Platform before 2025-11-15 allows remote authenticated users to execute code through malicious MDX. The server-side renderer evaluates non-simple inline JSX expressions from customer-controlled MDX, permitting injected JavaScript to fetch and evaluate attacker code. An account able to deploy MDX is required; successful execution exposes the hosted rendering environment, including its files and process environment.

CVSS severity8.3
High
EPSS probability1.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Server-side template injection in Mintlify Platform before 2025-11-15 allows remote authenticated users to execute code through malicious MDX. The server-side renderer evaluates non-simple inline JSX expressions from customer-controlled MDX, permitting injected JavaScript to fetch and evaluate attacker code. An account able to deploy MDX is required; successful execution exposes the hosted rendering environment, including its files and process environment.

The record

CVE
CVE-2025-67843
Published
Dec 19, 2025
Updated
Dec 19, 2025
Vendor
Mintlify
Product
Mintlify Platform
Classifications
CWE-1336, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 19, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 19, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2025-11-15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Mintlify · Mintlify Platformversion=0 <2025-11-15

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.3MITRECVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1336Improper Neutralization of Special Elements Used in a Template Engine
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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