Vulnerability record · CVE-2026-40505 · published 16 April 2026

CVE-2026-40505: Artifex mupdf vulnerability

Artifex · Mupdf

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.

4.8 CVSS 4.0 Medium EPSS 0.19% · top 92.4% CWE-150 · CWE-150

4.8CVSS 4.0 base score

0.19%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

4References

17 Jun 2026Last modified by NVD

Description

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/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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Mupdf Artifex

References

Link	Tags
https://cgit.ghostscript.com/cgi-bin/cgit.cgi/mupdf.git/commit/?id=0f17d789fe8c29b41e47663be82514aaca3a4dfb	Patch
https://github.com/ArtifexSoftware/mupdf/commit/0f17d789fe8c29b41e47663be82514aaca3a4dfb	Patch
https://github.com/ArtifexSoftware/mupdf/releases/tag/1.27.0	Product
https://www.vulncheck.com/advisories/mupdf-mutool-ansi-injection-via-metadata	Third Party Advisory

Track CVE-2026-40505 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2019-7321Artifex mupdf out-of-bounds write vulnerabilityUsage of an uninitialized variable in the function fz_load_jpeg in Artifex MuPDF 1.14 can result in a heap overflow vulnerability that allows an atta…EPSS 3.2%13 Jun 2019 9.8CVE-2016-6525Debian linux memory buffer overflow vulnerabilityHeap-based buffer overflow in the pdf_load_mesh_params function in pdf/pdf-shade.c in MuPDF allows remote attackers to cause a denial of service (cra…EPSS 3.8%22 Sep 2016 9.3CVE-2011-0341Artifex mupdf memory buffer overflow vulnerabilityStack-based buffer overflow in the pdfmoz_onmouse function in apps/mozilla/moz_main.c in the MuPDF plug-in 2008.09.02 for Firefox allows remote attac…EPSS 3.8%13 May 2011 7.8CVE-2020-16600Artifex mupdf use after free vulnerabilityA Use After Free vulnerability exists in Artifex Software, Inc. MuPDF library 1.17.0-rc1 and earlier when a valid page was followed by a page with in…EPSS 0.96%9 Dec 2020 7.8CVE-2012-5340Sumatrapdfreader sumatrapdf integer overflow vulnerabilitySumatraPDF 2.1.1/MuPDF 1.0 allows remote attackers to cause an Integer Overflow in the lex_number() function via a corrupt PDF file.EPSS 5.7%23 Jan 2020 7.8CVE-2019-13290Artifex mupdf out-of-bounds write vulnerabilityArtifex MuPDF 1.15.0 has a heap-based buffer overflow in fz_append_display_node located at fitz/list-device.c, allowing remote attackers to execute a…EPSS 3.0%4 Jul 2019 7.8CVE-2018-1000038Artifex mupdf out-of-bounds write vulnerabilityIn Artifex MuPDF 1.12.0 and earlier, a stack buffer overflow in function pdf_lookup_cmap_full in pdf/pdf-cmap.c could allow an attacker to execute ar…EPSS 1.9%24 May 2018 7.8CVE-2016-8728Artifex mupdf out-of-bounds write vulnerabilityAn exploitable heap out of bounds write vulnerability exists in the Fitz graphical library part of the MuPDF renderer. A specially crafted PDF file c…EPSS 1.7%24 Apr 2018

Source: NIST National Vulnerability Database (record CVE-2026-40505), CISA KEV, FIRST EPSS (scores of 2026-10-12). This page is refreshed as NVD updates the record.