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Vulnerabilities CVE-2026-40505

CVE-2026-40505

Medium
Open
TLP:CLEAR

MuPDF < 1.27 mutool ANSI Injection via Metadata

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Description

MuPDF before 1.27 contains an ANSI injection vulnerability in mutool that allows attackers to inject arbitrary ANSI escape sequences through crafted PDF metadata fields. Attackers can embed malicious ANSI escape codes in PDF metadata that are passed unsanitized to terminal output when running mutool info, enabling them to manipulate terminal display for social engineering attacks such as presenting fake prompts or spoofed commands.

Details

CVSS Score
4.8
EPSS Score
0.17%

6.3th percentile

CVSS Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Confidence
90%
Published
Apr 16, 2026
Last Modified
Jul 14, 2026
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