Vulnerability in Artifex Mupdf
CVE-2025-71382
MuPDF before 1.27.0-rc1 contains an uncontrolled recursion vulnerability in the EPUB CSS rendering engine that allows remote attackers to cause a denial of service by supplying a maliciously crafted EPUB file with deeply nested HTML elements and inline CSS styles. The function value_from_inheritable_property() in css-apply.c recurses through the CSS property inheritance chain without a depth limit, exhausting the process stack and causing a crash in any application using MuPDF for EPUB rendering.
EPSS: 0.006 (46.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
Affected products
- Artifex Mupdf
- Artifexsoftware Mupdf — versions 0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (release-notes, Release Notes)
- disclosure@vulncheck.com (Exploit, technical-description, exploit, Mitigation, Issue Tracking)
- disclosure@vulncheck.com (Patch, patch)
- disclosure@vulncheck.com (Patch, Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2025-71382?
- CVE-2025-71382 is a medium-severity vulnerability in Artifex Mupdf, classified under Uncontrolled Recursion. CVSS score: 6.5/10. Published 2026-06-23.
- How severe is CVE-2025-71382?
- Medium severity. CVSS v3 base score is 6.5 out of 10.