CVE-2026-25556

MEDIUM EPSS 37.7%
Published Feb 6, 20264mo ago · Modified Jun 17, 20261w ago
5.9 CVSS 4.0
Medium
Find Similar
Published Feb 6, 2026 4mo ago
Last Modified Jun 17, 2026 1w ago

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 Details

Base Score
5.9
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction A
Scope X

Threat Intelligence

EPSS Exploit Probability
37.7% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-415

Affected Products 1

VendorProductVersionRange
artifexmupdf*≥1.23.0  –  ≤1.27.0

References 4

  • bugs.ghostscript.com https://bugs.ghostscript.com/show_bug.cgi?id=709029
    ExploitIssue Tracking
  • cgit.ghostscript.com https://cgit.ghostscript.com/cgi-bin/cgit.cgi/mupdf.git/commit/?id=d4743b6092d513321c23c6f7fe5cff87cde043c1
    Patch
  • mupdf.com https://mupdf.com/
    Product
  • vulncheck.com https://www.vulncheck.com/advisories/mupdf-barcode-decoding-double-free
    Third Party Advisory

Remediation

  • cgit.ghostscript.com https://cgit.ghostscript.com/cgi-bin/cgit.cgi/mupdf.git/commit/?id=d4743b6092d513321c23c6f7fe5cff87cde043c1
    Patch