🛡️ CVE-2025-71382 — mupdf

🟡 CVSS 6.5 — Medium ⚠️ Exploit Public CWE-674 NVD
6.5
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Affected software

CVE-2025-71382 is recorded against 1 package.

  • mupdf (fixed in 1.27.0)

Timeline and source

Published on 23 June 2026 and last revised on 14 July 2026. A public exploit is known to exist, which raises the urgency of patching considerably. A vendor advisory or fix has been published. Record sourced from NVD.

References

bugs.ghostscript.com
github.com
github.com
www.vulncheck.com

Details

Severity MEDIUM
CVSS Score 6.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE CWE-674
Public Exploit ⚠️ Yes
Source NVD
Published 2026-06-23
Updated 2026-08-11
Modified 2026-07-14

Affected Packages

Software From version Fixed in
mupdf — 1.27.0

Similar Threats

Exploit Protection

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CVE-2025-71382 carries CVSS 6.5 Medium rating and a public exploit already exists. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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