Alerts This Week
Warning Icon 1 764
Alerts This Week
Warning Icon 1 764

CentOS 8 Poppler Security Update Addresses Vulnerability 2023-5812c4da5e0

fedora
Calendar Grey February 22, 2026
Dist Fedora Esm H88
Fix for critical Denial of Service in MuPDF on Fedora 42 mitigates serious security threat effectively.
fix CVE-2026-25556 (rhbz#2437973)

Summary

MuPDF is a lightweight PDF viewer and toolkit written in portable C.

The renderer in MuPDF is tailored for high quality anti-aliased

graphics. MuPDF renders text with metrics and spacing accurate to

within fractions of a pixel for the highest fidelity in reproducing

the look of a printed page on screen.

MuPDF has a small footprint. A binary that includes the standard

Roman fonts is only one megabyte. A build with full CJK support

(including an Asian font) is approximately seven megabytes.

MuPDF has support for all non-interactive PDF 1.7 features, and the

toolkit provides a simple API for accessing the internal structures of

the PDF document. Example code for navigating interactive links and

bookmarks, encrypting PDF files, extracting fonts, images, and

searchable text, and rendering pages to image files is provided.

Update Information:

fix CVE-2026-25556 (rhbz#2437973)

Change Log

* Fri Feb 13 2026 Michael J Gruber - 1.26.3-5 - fix CVE-2026-25556 (rhbz#2437973)

References


[ 1 ] Bug #2437973 - CVE-2026-25556 mupdf: MuPDF: Denial of Service via crafted input during barcode decoding [fedora-42] https://bugzilla.redhat.com/show_bug.cgi?id=2437973

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-4366b8d2d8' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

Severity
critical
Lowest
Low
Medium
High
Critical

Name: mupdf
Product: Fedora 42
Version: 1.26.3
Release: 5.fc42
Summary: A lightweight PDF viewer and toolkit

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here