PT-2026-51571 · Artifexsoftware · Mupdf

Ishayu Potey · Published 2026-06-23 · Updated 2026-06-23 · CVE-2025-71382

Mitre

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

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.

Exploit

Fix

Uncontrolled Recursion

Weakness Enumeration

CWE-674

Related Identifiers

CVE-2025-71382

Affected Products

Mupdf

References · 5

• 🔥 https://bugs.ghostscript.com/show_bug.cgi?id=708840 · Exploit
• https://github.com/ArtifexSoftware/mupdf/commit/70b71ab22e6de4d4c44cd301c88231f623a4e94e · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2025-71382 · Security Note
• https://github.com/ArtifexSoftware/mupdf/releases/tag/1.27.0-rc1 · Note
• https://vulncheck.com/advisories/mupdf-rc1-stack-exhaustion-dos-via-epub-css-rendering · Note