Unrated severityNVD Advisory· Published Jun 23, 2026· Updated Jun 23, 2026
MuPDF < 1.27.0-rc1 Stack Exhaustion DoS via EPUB CSS Rendering
CVE-2025-71382
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.
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Affected products
1Patches
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References
4- github.com/ArtifexSoftware/mupdf/commit/70b71ab22e6de4d4c44cd301c88231f623a4e94emitrepatch
- bugs.ghostscript.com/show_bug.cgimitretechnical-descriptionexploit
- www.vulncheck.com/advisories/mupdf-rc1-stack-exhaustion-dos-via-epub-css-renderingmitrethird-party-advisory
- github.com/ArtifexSoftware/mupdf/releases/tag/1.27.0-rc1mitrerelease-notes
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