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Fedora 44 Calibre Significant Remedy for Code Execution 2026-79a5573be3

fedora
Calendar Grey July 13, 2026
Dist Fedora Esm H88
An important update for Fedora 44 calibre addresses a critical code execution risk through malicious e-book files. Stay secure!
Update to 9.11.0

Summary

Calibre is meant to be a complete e-library solution. It includes library

management, format conversion, news feeds to ebook conversion as well as

e-book reader sync features.

Calibre is primarily a ebook cataloging program. It manages your ebook

collection for you. It is designed around the concept of the logical book,

i.e. a single entry in the database that may correspond to ebooks in several

formats. It also supports conversion to and from a dozen different ebook

formats.

Supported input formats are: MOBI, LIT, PRC, EPUB, CHM, ODT, HTML, CBR, CBZ,

RTF, TXT, PDF and LRS.

Update Information:

Update to 9.11.0. Fixes rhbz#2493338 and CVE-2026-53511

Topics%20covered

Topics Covered

security advisory fedora update code execution important calibre

Change Log

* Sun Jul 5 2026 Kevin Fenzi - 9.11.0-1 - Update to 9.11.0. Fixes rhbz#2493338 * Fri Jun 12 2026 Yaakov Selkowitz - 9.9.0-4 - Rebuilt for openssl 4.0 * Mon Jun 8 2026 František Zatloukal - 9.9.0-3 - Rebuilt for icu 78.3 * Sun Jun 7 2026 Kevin Fenzi - 9.9.0-2 - Disable test_mem_leaks for now, it is failing on x86_64 only for some reason * Sat May 30 2026 Kevin Fenzi - 9.9.0-1 - Update to 9.9.0. Fixes rhbz#2482466

References


[ 1 ] Bug #2498951 - CVE-2026-53511 calibre: Calibre: Arbitrary code execution via malicious e-book file processing [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2498951

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-79a5573be3' 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
important
Lowest
Low
Medium
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Critical

Name: calibre
Product: Fedora 44
Version: 9.11.0
Release: 1.fc44
URL: https://calibre-ebook.com/
Summary: E-book converter and library manager

Topics%20covered

Topics Covered

security advisory fedora update code execution important calibre

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