Bug 2447437 (CVE-2026-30853) - CVE-2026-30853 calibre: Calibre: Arbitrary file write via crafted RocketBook (.rb) file
Summary: CVE-2026-30853 calibre: Calibre: Arbitrary file write via crafted RocketBook ...
Keywords:
Status: NEW
Alias: CVE-2026-30853
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2447869
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-13 20:01 UTC by OSIDB Bzimport
Modified: 2026-03-16 05:05 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-03-13 20:01:36 UTC 
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.
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