CVE-2025-71382: ArtifexSoftware mupdf

MuPDF < 1.27.0-rc1 Stack Exhaustion DoS via EPUB CSS Rendering

CVSS 7.1 HighEPSS 0.0058 · 48th percentile

Published by the CVE Program (CNA: VulnCheck) at 23 Jun 2026, 17:21 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
ArtifexSoftware	mupdf pkg:github/ArtifexSoftware/mupdf	affected before 1.27.0-rc1 custom Other versions: affected

Identifiers

CVE-2025-71382

CNA

VulnCheck

Weakness (CWE)

CWE-674

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.1	High	4.0	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	CNA (VulnCheck)Used for this record
6.5	Medium	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.0058, the 48th percentile, on 15 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

23 Jun 2026, 17:21 UTC Confirmed by the CVE List

Sources

References from the CNA

github.com/ArtifexSoftware/mupdf/releases/tag/1.27.0-rc1 release-notes
github.com/ArtifexSoftware/mupdf/commit/70b71ab22e6de4d4c44cd301c88231f623a4e94e patch
www.vulncheck.com/advisories/mupdf-rc1-stack-exhaustion-dos-via-epub-css-rendering third-party-advisory
bugs.ghostscript.com/show_bug.cgi?id=708840 technical-descriptionexploit

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.