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VULNERABILITIES

CVE-2026-40505 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:3.3 LOWVector:CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://cgit.ghostscript.com/cgi-bin/cgit.cgi/mupdf.git/commit/?id=0f17d789fe8c29b41e47663be82514aaca3a4dfb [email protected]Patch
https://github.com/ArtifexSoftware/mupdf/commit/0f17d789fe8c29b41e47663be82514aaca3a4dfb [email protected]Patch
https://github.com/ArtifexSoftware/mupdf/releases/tag/1.27.0 [email protected]Product
https://www.vulncheck.com/advisories/mupdf-mutool-ansi-injection-via-metadata [email protected]Third Party Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-150Improper Neutralization of Escape, Meta, or Control Sequences[email protected]

Affected Products

ProductVersions
artifex mupdf
< 1.27.0

CPE

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

Remediation

  • No remediation found in references.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-40505
NVD Published Date:
Apr 16, 2026
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2026-40505 Details - Not Deferred