calibre is a cross-platform e-book manager for viewing, converting, editing, and cataloging e-books. Prior to version 9.6.0, a path traversal vulnerability exists in Calibre' handling of images in Markdown and other similar text-based files allowing an attacker to include arbitrary files from the file system into the converted book. Additionally, missing authentication and server-side request forgery in the background-image endpoint in the ebook reader web view allow the files to be exfiltrated without additional interaction. Version 9.6.0 contains a fix.

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-7de23151cd advisory.

    Update to 9.6.0. Fixes rhbz#2452087

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-9cc418c23e advisory.

    Update to 9.6.0. Fixes rhbz#2452087

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - calibre is a cross-platform e-book manager for viewing, converting, editing, and cataloging e-books. Prior     to version 9.6.0, a path traversal vulnerability exists in Calibre' handling of images in Markdown and     other similar text-based files allowing an attacker to include arbitrary files from the file system into     the converted book. Additionally, missing authentication and server-side request forgery in the     background-image endpoint in the ebook reader web view allow the files to be exfiltrated without     additional interaction. Version 9.6.0 contains a fix. (CVE-2026-33206)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
310685	Fedora 44 : calibre (2026-7de23151cd)	Nessus	Fedora Local Security Checks	high
305101	Fedora 43 : calibre (2026-9cc418c23e)	Nessus	Fedora Local Security Checks	high
304172	Linux Distros Unpatched Vulnerability : CVE-2026-33206	Nessus	Misc.	high

Detections

Analytics

CVE-2026-33206

high

Tenable Plugins

high

high

high