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CVE-2026-33206

calibre has a path traversal vulnerability

Published: Mar 27, 2026Updated: Mar 30, 2026 Sources: CVE List NVDCWE-23
NVD MITRE
6.3CVSSMEDIUM
EPSS Score
0.2%
Top 89.2%
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. 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.

CVSS Vector Breakdown

AV:LAC:LPR:NUI:RS:CC:HI:NA:N
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-23

Affected Products

calibrekovidgoyal
On-prem
Consumer Software / productivity
calibrecalibre-ebook
On-prem
Consumer Software / productivity
kovidgoyalindividual-devConsumer Softwareaka calibre, kitty
calibre-ebookoss-projectConsumer Softwareaka calibre

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Discovery
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References

https://github.com/kovidgoyal/calibre/security/advisories/GHSA-h3p4-m74f-43g6
github.com

Timeline

Published
Mar 27, 2026
Last Updated
Mar 30, 2026

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