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CVE-2026-40505

4.8 medium SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 2

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 4.8 · artifexNVD modified 2026-10-26 21:10

Affected (CPE criteria) 1

  • cpe:2.3:a:artifex:mupdf:*:*:*:*:*:*:*:*

References 4