CVE-2025-71382

HIGH
MEDIUM Priority: 0.04 BB Relevance: 64/100
Published: 2026-06-23 Modified: 2026-11-08 First seen: 2026-11-08 Status: active

Attack Surface

Network Low Complexity No Auth

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: Passive
AT: None
VC: None
VI: None
VA: High

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
ArtifexSoftware mupdf 0 < 1.27.0-rc1

Bug Bounty Relevance

64 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

7.1 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

EPSS — Exploitation Probability

0.58%
Raw Score 0.005830
Percentile 48.4%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00583
2026-11-12
0.00583
2026-11-10
0.00583
2026-11-09
0.00583
2026-11-08
0.00583

Intelligence Sources

mitre ref →