CVE-2026-30853
calibre has a Path Traversal Leading to Arbitrary File Write
CVSS Score
5.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-22 |
| Vendor | kovidgoyal |
| Product | calibre |
| Published | Mar 13, 2026 |
| Last Updated | Mar 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:L Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
None
Integrity
Low
Availability
Low
Affected Versions
kovidgoyal / calibre
< 9.5.0