What is CVE-2025-67842?

CVE-2025-67842 is a medium-severity vulnerability in Mintlify, classified under Inclusion of Functionality from Untrusted Control Sphere. CVSS score: 6.4/10. Published 2025-12-19.

How severe is CVE-2025-67842?

Medium severity. CVSS v3 base score is 6.4 out of 10.

Vulnerability in Mintlify

CVE-2025-67842

The Static Asset API in Mintlify Platform before 2025-11-15 allows remote attackers to inject arbitrary web script or HTML via the subdomain parameter because any tenant's assets can be served on any other tenant's documentation site.

Published 2025-12-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (26.9th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 26.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.000

Affected products

Mintlify
Mintlify Platform — versions 0

Weakness classification (CWE)

CWE-829 — Inclusion of Functionality from Untrusted Control Sphere

References

www.mintlify.com/docs/changelog (Release Notes)
www.mintlify.com/blog/working-with-security-researchers-november-2025 (Vendor Advisory)
kibty.town/blog/mintlify/ (Exploit, Third Party Advisory)
gist.github.com/hackermondev/5e2cdc32849405fff6b46957747a2d28 (Third Party Advisory)
news.ycombinator.com/item (Issue Tracking)
heartbreak.ing (Third Party Advisory)

Frequently asked questions

What is CVE-2025-67842?: CVE-2025-67842 is a medium-severity vulnerability in Mintlify, classified under Inclusion of Functionality from Untrusted Control Sphere. CVSS score: 6.4/10. Published 2025-12-19.
How severe is CVE-2025-67842?: Medium severity. CVSS v3 base score is 6.4 out of 10.