CVE-2025-71382

Medium

Description

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.

SeverityMedium

CVSS6.5

Exploit probability—

ProductArtifex Mupdf

PublishedJun 23, 2026

First seenJun 23, 2026

Weakness typeCWE-674CWE-674

How to fix

Update

artifex mupdf1.27.0 or later

Patches

github.com/ArtifexSoftware/mupdf/commit/70b71ab22e6de4d4c44cd301c88231f623a4e94e

Vendor advisories

github.com/ArtifexSoftware/mupdf/releases/tag/1.27.0-rc1

Affected products

Product	Affected versions	Fixed in
artifex mupdf	v < 1.27.0	1.27.0

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