Description
calibre is a cross-platform e-book manager for viewing, converting, editing, and cataloging e-books. Versions 9.2.1 and below are vulnerable to Path Traversal through PDB readers (both 132-byte and 202-byte header variants) that allow arbitrary file writes with arbitrary extension and arbitrary content anywhere the user has write permissions. Files are written in 'wb' mode, silently overwriting existing files. This can lead to potential code execution and Denial of Service through file corruption. This issue has been fixed in version 9.3.0.
References (2)
Core 2
Core References
Vendor Advisory x_refsource_confirm
https://github.com/kovidgoyal/calibre/security/advisories/GHSA-vmfh-7mr7-pp2w
Scores
CVSS v3
8.8
EPSS
0.0005
EPSS Percentile
14.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-22
Status
published
Products (1)
calibre-ebook/calibre
< 9.3.0
Published
Feb 20, 2026
Tracked Since
Feb 20, 2026