CVE-2025-71382
MuPDF < 1.27.0-rc1 Stack Exhaustion DoS via EPUB CSS Rendering
- State
- Published
- Severity
- 7.1 High
- Published
- Jun 23, 2026
- Updated
- Jul 14, 2026
- Reserved
- Jun 23, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.1 High | 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 | VulnCheck |
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-674 Uncontrolled Recursion
Affected Products
| Product | Versions |
|---|---|
mupdfArtifexSoftware |
|
References
- https://github.com/ArtifexSoftware/mupdf/releases/tag/1.27.0-rc1release-notes
- https://bugs.ghostscript.com/show_bug.cgi?id=708840technical-descriptionexploit
- https://github.com/ArtifexSoftware/mupdf/commit/70b71ab22e6de4d4c44cd301c88231f623a4e94epatch
- https://www.vulncheck.com/advisories/mupdf-rc1-stack-exhaustion-dos-via-epub-css-renderingthird-party-advisory
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