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CVE-2025-71382— MuPDF < 1.27.0-rc1 Stack Exhaustion DoS via EPUB CSS Rendering

Quick assessment

Affected
ArtifexSoftware mupdf
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ArtifexSoftware mupdf是ArtifexSoftware公司的一个解析PDF文档的软件。 ArtifexSoftware mupdf 1.27.0-rc1之前版本存在资源管理错误漏洞，该漏洞源于EPUB CSS渲染引擎中存在不受控制的递归，攻击者通过提供特制的EPUB文件，利用函数value_from_inheritable_property在css-apply.c中递归处理CSS属性继承链且无深度限制，耗尽进程栈，导致崩溃。

CVSS 6.5 · Medium EPSS 0.58% · P46

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
ArtifexSoftware mupdf < 1.27.0-rc1 affected
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I. Basic Information for CVE-2025-71382

Vulnerability Information
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Vulnerability Title
MuPDF < 1.27.0-rc1 Stack Exhaustion DoS via EPUB CSS Rendering
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的递归
Source: CVE Program / CVE List V5
Vulnerability Title
ArtifexSoftware mupdf 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ArtifexSoftware mupdf是ArtifexSoftware公司的一个解析PDF文档的软件。 ArtifexSoftware mupdf 1.27.0-rc1之前版本存在资源管理错误漏洞，该漏洞源于EPUB CSS渲染引擎中存在不受控制的递归，攻击者通过提供特制的EPUB文件，利用函数value_from_inheritable_property在css-apply.c中递归处理CSS属性继承链且无深度限制，耗尽进程栈，导致崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ArtifexSoftware mupdf 0 ~ 1.27.0-rc1 -

II. Public POCs for CVE-2025-71382

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III. Intelligence Information for CVE-2025-71382

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Patches & Fixes for CVE-2025-71382 (1)

Vendor Advisories for CVE-2025-71382 (1)

Vendor Pages for CVE-2025-71382 (1)

Other References for CVE-2025-71382 (1)

IV. Related Vulnerabilities

Same product: mupdf
Same weakness: CWE-674

V. Comments for CVE-2025-71382

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