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CVE-2026-25556

MuPDF 1.23.0 through 1.27.0 Barcode Decoding Double Free

Published: Feb 6, 2026Updated: Feb 24, 2026 Sources: CVE List NVDCWE-415
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.5%
Top 62.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

MuPDF versions 1.23.0 through 1.27.0 contain a double-free vulnerability in fz_fill_pixmap_from_display_list() when an exception occurs during display list rendering. The function accepts a caller-owned fz_pixmap pointer but incorrectly drops the pixmap in its error handling path before rethrowing the exception. Callers (including the barcode decoding path in fz_decode_barcode_from_display_list) also drop the same pixmap in cleanup, resulting in a double-free that can corrupt the heap and crash the process. This issue affects applications that enable and use MuPDF barcode decoding and can be triggered by processing crafted input that causes a rendering-time error while decoding barcodes.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-415

Affected Products

mupdfartifexOSS Libraries
MuPDFArtifex Software
Library
OSS Libraries / generic-library
artifexcommercialUSOSS Librariesaka artifex software
artifex softwarecommercialOSS Librariesaka artifex

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://bugs.ghostscript.com/show_bug.cgi?id=709029
bugs.ghostscript.com
https://cgit.ghostscript.com/cgi-bin/cgit.cgi/mupdf.git/commit/?id=d4743b6092d513321c23c6f7fe5cff87cde043c1
cgit.ghostscript.com
https://mupdf.com/
mupdf.com
and 1 more references View all →

Timeline

Published
Feb 6, 2026
Last Updated
Feb 24, 2026

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