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VULNERABILITIES

CVE-2026-33206 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.3 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/kovidgoyal/calibre/security/advisories/GHSA-h3p4-m74f-43g6 CISA-ADPExploitVendor Advisory
https://github.com/kovidgoyal/calibre/security/advisories/GHSA-h3p4-m74f-43g6 [email protected]ExploitVendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-23Relative Path Traversal[email protected]

Affected Products

ProductVersions
calibre-ebook calibre
< 9.6.0

CPE

  • cpe:2.3:a:calibre-ebook:calibre:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-33206
NVD Published Date:
Mar 27, 2026
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2026-33206 Details - Not Deferred