CVE•Published 2026-04-16•Modified 2026-05-26•0 articles on news•5 live references•NVD data

CVE-2026-40505Artifex · Mupdf

Vulnerability data via NVD (ingested)

CVSS v3.1

3.3

LOW

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

EPSS percentile

Exploit Prediction Scoring System · top 100% of all CVEs

Weaknesses (CWE)

CWE-150Improper Neutralization of Escape, Meta, or Control Sequences

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.

Timeline

Published 2026-04-16

Modified 2026-05-26

External references

NVD MITRE Exploit-DB Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-40505

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Artifex Mupdf"

All exposed Artifex Mupdf instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Mupdf"

HTTP body or banner mentions "Mupdf" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-40505