CVE catalog

CVE-2026-40505

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

[CVE catalog]

Severity: Medium · CVSS 4.8CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/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
Published: Apr 16, 2026, 1:20:08 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.17% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	mupdf	sid	`1.28.2+ds1-2`	fixed
Debian	mupdf	forky	`1.28.2+ds1-2`	fixed
Debian	mupdf	trixie	`1.25.1+ds1-6+deb13u1`	vulnerable
Debian	mupdf	trixie-security	`1.25.1+ds1-6+deb13u1`	vulnerable
Debian	mupdf	bookworm	`1.21.1+ds2-1+deb12u1`	vulnerable
Debian	mupdf	bookworm-security	`1.21.1+ds2-1+deb12u1`	vulnerable
Cpe	mupdf	Not reported	Not reported	vulnerable
Cpe	mupdf	Not reported	`1.27.0`	fixed
Cpe	mupdf	Not reported	`1.27.0`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	mupdf	source	sid	`1.27.0+ds1-5`	not yet assigned	Not reported	[1134199]
Debian	mupdf	source	forky	`1.27.0+ds1-5`	not yet assigned	Not reported	[1134199]
Debian	mupdf	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1134199]
Debian	mupdf	source	bookworm	`(unfixed)`	not yet assigned	Not reported	[1134199]
Cpe	mupdf	cpe	Not reported	`1.27.0`	Not reported	Not reported	Not reported
Cpe	mupdf	cpe	Not reported	`1.27.0`	Not reported	NVD-CVE-2026-40505	Not reported

[Debian bug #1134199]

Notes

[trixie] mupdf: Minor issue [bookworm] mupdf: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libmupdf-dev]Affected
Source package: [mupdf]
Details (4)
- 1.21.1+ds2-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · mupdf · debian · bookworm; nvd · mupdf · debian · 12
- 1.21.1+ds2-1+deb12u1 · arm64 · bookworm
  Affected
  nvd · mupdf · debian · bookworm; nvd · mupdf · debian · 12
- 1.21.1+ds2-1+deb12u1 · amd64 · bookworm-security
  Affected
  nvd · mupdf · debian · bookworm; nvd · mupdf · debian · 12
- 1.21.1+ds2-1+deb12u1 · arm64 · bookworm-security
  Affected
  nvd · mupdf · debian · bookworm; nvd · mupdf · debian · 12
[mupdf]Affected
Details (4)
- 1.21.1+ds2-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · mupdf · debian · bookworm; nvd · mupdf · debian · 12
- 1.21.1+ds2-1+deb12u1 · arm64 · bookworm
  Affected
  nvd · mupdf · debian · bookworm; nvd · mupdf · debian · 12
- 1.21.1+ds2-1+deb12u1 · amd64 · bookworm-security
  Affected
  nvd · mupdf · debian · bookworm; nvd · mupdf · debian · 12
- 1.21.1+ds2-1+deb12u1 · arm64 · bookworm-security
  Affected
  nvd · mupdf · debian · bookworm; nvd · mupdf · debian · 12
[mupdf-tools]Affected
Source package: [mupdf]
Details (4)
- 1.21.1+ds2-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · mupdf · debian · bookworm; nvd · mupdf · debian · 12
- 1.21.1+ds2-1+deb12u1 · arm64 · bookworm
  Affected
  nvd · mupdf · debian · bookworm; nvd · mupdf · debian · 12
- 1.21.1+ds2-1+deb12u1 · amd64 · bookworm-security
  Affected
  nvd · mupdf · debian · bookworm; nvd · mupdf · debian · 12
- 1.21.1+ds2-1+deb12u1 · arm64 · bookworm-security
  Affected
  nvd · mupdf · debian · bookworm; nvd · mupdf · debian · 12

[Debian 13 (Trixie)]

[libmupdf25.1]Affected
Source package: [mupdf]
Details (4)
- 1.25.1+ds1-6+deb13u1 · amd64 · trixie
  Affected
  nvd · mupdf · debian · 13
- 1.25.1+ds1-6+deb13u1 · arm64 · trixie
  Affected
  nvd · mupdf · debian · 13
- 1.25.1+ds1-6+deb13u1 · amd64 · trixie-security
  Affected
  nvd · mupdf · debian · 13
- 1.25.1+ds1-6+deb13u1 · arm64 · trixie-security
  Affected
  nvd · mupdf · debian · 13
[libmupdf-dev]Affected
Source package: [mupdf]
Details (4)
- 1.25.1+ds1-6+deb13u1 · amd64 · trixie
  Affected
  nvd · mupdf · debian · 13
- 1.25.1+ds1-6+deb13u1 · arm64 · trixie
  Affected
  nvd · mupdf · debian · 13
- 1.25.1+ds1-6+deb13u1 · amd64 · trixie-security
  Affected
  nvd · mupdf · debian · 13
- 1.25.1+ds1-6+deb13u1 · arm64 · trixie-security
  Affected
  nvd · mupdf · debian · 13
[mupdf]Affected
Details (4)
- 1.25.1+ds1-6+deb13u1 · amd64 · trixie
  Affected
  nvd · mupdf · debian · 13
- 1.25.1+ds1-6+deb13u1 · arm64 · trixie
  Affected
  nvd · mupdf · debian · 13
- 1.25.1+ds1-6+deb13u1 · amd64 · trixie-security
  Affected
  nvd · mupdf · debian · 13
- 1.25.1+ds1-6+deb13u1 · arm64 · trixie-security
  Affected
  nvd · mupdf · debian · 13
[mupdf-tools]Affected
Source package: [mupdf]
Details (4)
- 1.25.1+ds1-6+deb13u1 · amd64 · trixie
  Affected
  nvd · mupdf · debian · 13
- 1.25.1+ds1-6+deb13u1 · arm64 · trixie
  Affected
  nvd · mupdf · debian · 13
- 1.25.1+ds1-6+deb13u1 · amd64 · trixie-security
  Affected
  nvd · mupdf · debian · 13
- 1.25.1+ds1-6+deb13u1 · arm64 · trixie-security
  Affected
  nvd · mupdf · debian · 13
[python3-mupdf]Affected
Source package: [mupdf]
Details (4)
- 1.25.1+ds1-6+deb13u1 · amd64 · trixie
  Affected
  nvd · mupdf · debian · 13
- 1.25.1+ds1-6+deb13u1 · arm64 · trixie
  Affected
  nvd · mupdf · debian · 13
- 1.25.1+ds1-6+deb13u1 · amd64 · trixie-security
  Affected
  nvd · mupdf · debian · 13
- 1.25.1+ds1-6+deb13u1 · arm64 · trixie-security
  Affected
  nvd · mupdf · debian · 13

Observed: Oct 27, 2026, 7:59:05 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]