Vulnerability details

CVE-2026-26065

kovidgoyal calibre

calibre: Path Traversal can Lead to Arbitrary File Write and Potential Code Execution

CVSS 4.0

9.3Critical

Official 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.

CVSS scores

Score	Version	Source	Vector
9.3Critical	4.0	CVEProject cvelistV5 (CNA) (GitHub_M)	`CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`

Affected products

Vendor	Product	Versions	Source
kovidgoyal	calibre	< 9.3.0	CVEProject cvelistV5 (CNA)

References and advisories

https://github.com/kovidgoyal/calibre/security/advisories/GHSA-vmfh-7mr7-pp2w x_refsource_CONFIRM
https://github.com/kovidgoyal/calibre/commit/b6da1c3878c06eb1356cb0ec1106cb66e0e9bfb8 x_refsource_MISC

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Details

Published: 2026-02-20
Last updated: 2026-02-20
State: Published
Assigner (CNA): GitHub_M

Exploit prediction (EPSS)

0.59%

Probability of exploitation in 30 days

48.3%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: None
Technical impact: Total

Weaknesses (CWE)

CWE-22
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')