CVE-2025-71382: Artifex Mupdf

Medium severity, CVSS 6.5. EPSS: 0.6% chance of exploitation in the next 30 days.

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.

Affected products

• Artifex Mupdf: before 1.27.0 (fixed in 1.27.0)

Published 2026-06-23. Last modified 2026-10-06.