CVE-2026-30853

calibre is a cross-platform e-book manager for viewing, converting, editing, and cataloging e-books. Prior to 9.5.0, a path traversal vulnerability in the RocketBook (.rb) input plugin (src/calibre/ebooks/rb/reader.py) allows an attacker to write arbitrary files to any path writable by the calibre process when a user opens or converts a crafted .rb file. This is the same bug class fixed in CVE-2026-26065 for the PDB readers, but the fix was never applied to the RB reader. This vulnerability is fixed in 9.5.0.

CVSS v3 5.0 MEDIUM

5.0^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 2.7

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact LOW

Scope CHANGED

References

Link	Resource
https://github.com/kovidgoyal/calibre/security/advisories/GHSA-7mp7-rfrg-542x	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2026-03-13 19:54

Updated : 2026-03-18 14:01

NVD link : CVE-2026-30853

Mitre link : CVE-2026-30853

CVE.ORG link : CVE-2026-30853

JSON object : View

Products Affected

calibre-ebook

calibre

CWE

CWE-22

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

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