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CVE-2026-40505

MuPDF < 1.27 mutool ANSI Injection via Metadata

Published: Apr 16, 2026Updated: May 26, 2026 Sources: CVE List NVDCWE-150
3.3LOW
NVD MITRE
EPSS Score
0.2%
Top 93.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:LPR:NUI:RS:UC:NI:LA:N
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-150

Affected Products

artifex
commercial·USaka artifex software
mupdf
OSS Libraries
Artifex Software Inc.
commercial·USaka artifex
MuPDF
OSS Libraries

Exploitability

Official Patch Available

References

https://cgit.ghostscript.com/cgi-bin/cgit.cgi/mupdf.git/commit/?id=0f17d789fe8c29b41e47663be82514aaca3a4dfb
cgit.ghostscript.com
https://github.com/ArtifexSoftware/mupdf/commit/0f17d789fe8c29b41e47663be82514aaca3a4dfb
github.com
https://github.com/ArtifexSoftware/mupdf/releases/tag/1.27.0
github.com
and 1 more references View all →

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