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TI-2025-43502 Aliases CVE-2025-71382GHSA-mhwh-83qc-j6x4

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

Priority LOW 32CWE-674Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-674.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00583 48th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix Fixed mupdf (ArtifexSoftware): 1.27.0-rc1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ArtifexSoftwaremupdfbefore 1.27.0-rc11.27.0-rc1Patch availableCNA
  • mupdf VendorArtifexSoftware Affected before 1.27.0-rc1 Fixed in 1.27.0-rc1 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:artifex:mupdf:*:*:*:*:*:*:*:*before 1.27.0VulnerableArtifex
  • cpe:2.3:a:artifex:mupdf:*:*:*:*:*:*:*:* Versions before 1.27.0 Vulnerable ·Artifex

Remediation

  • Fix · CNA mupdf (ArtifexSoftware) Fixed in 1.27.0-rc1

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-71382
  2. 2026-10-03 Alias added: GHSA-mhwh-83qc-j6x4

References

Exploit 1

Patch 1

Other 1

  • TI-2024-16051 freeglut through 3.4.0 was discovered to contain a memory leak via the menuEntry variable… CVSS 3.1HIGH 7.5
  • TI-2023-27942 A floating point exception (divide-by-zero) vulnerability was discovered in Artifex MuPDF… CVSS 3.1HIGH 7.5
  • TI-2021-02374 Double free in mupdf CVSS 3.1HIGH 7.8
  • TI-2016-07185 Out-of-bounds write in Artifex MuPDF CVSS 3.1HIGH 7.8
  • TI-2012-04514 SumatraPDF 2.1.1/MuPDF 1.0 allows remote attackers to cause an Integer Overflow in the… CVSS 3.1HIGH 7.8
  • TI-2023-27939 A floating point exception (divide-by-zero) vulnerability was discovered in Artifex MuPDF… CVSS 3.1HIGH 7.5
See all 66 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences