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CVE-2026-26065

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

Published: Feb 20, 2026Updated: Feb 20, 2026 Sources: CVE List NVD BDUCWE-22
NVD MITRE
8.8CVSSHIGH
EPSS Score
0.5%
Top 60.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-22

Affected Products

calibrecalibre-ebook
On-prem
Consumer Software / productivity
calibrekovidgoyal
On-prem
Consumer Software / productivity
CalibreСообщество свободного программного обеспечения
On-prem
Operating Systems / linux-distro
calibre-ebookoss-projectConsumer Softwareaka calibre
kovidgoyalindividual-devConsumer Softwareaka calibre, kitty
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Collection
Discovery
View detailed technique mapping

References

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

Timeline

Published
Feb 20, 2026
Last Updated
Feb 20, 2026

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