CVE-2026-112036: MuPDF 1.28.0, 1.28.1, 1.28.2, 1.28.3, 1.28.4, 1.28.5

Affected technology

MuPDF · 1.28.0, 1.28.1, 1.28.2, 1.28.3, 1.28.4, 1.28.5
Artifex

Description’s affected range: up to 1.28.5

Component: Signature Locking
Function: free_char_list
File: source/pdf/pdf-xref.c

Attack conditions (VulDB, CVSS 4.0): Network (remote) · No privileges required · Passive user interaction

What an attacker can do

VulDB’s CVSS 4.0 assessment (base score 2.1/10) rates confidentiality and integrity impact as none; availability impact as low. The description does not specify what an attacker can achieve beyond these rated impacts.