---
id: CVE-2025-71382
title: >-
  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 elem…
summary: >-
  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 elem…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'
cwe:
  - CWE-674
vendor: artifex
product: mupdf
affected:
  - mupdf < 1.27.0
patched:
  - mupdf 1.27.0
published: '2026-06-23'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T21:10:00.190'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-71382'
references:
  - url: 'https://bugs.ghostscript.com/show_bug.cgi?id=708840'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/ArtifexSoftware/mupdf/commit/70b71ab22e6de4d4c44cd301c88231f623a4e94e
    label: disclosure@vulncheck.com
  - url: 'https://github.com/ArtifexSoftware/mupdf/releases/tag/1.27.0-rc1'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/mupdf-rc1-stack-exhaustion-dos-via-epub-css-rendering
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00583
epssPercentile: 0.4583
ingestedAt: '2026-09-30T21:25:07.790Z'
---

## Overview

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

- `mupdf < 1.27.0`

## Remediation

Upgrade past the affected range:

- `mupdf 1.27.0`