CVE-2026-30853 — calibre has a Path Traversal Leading to Arbitrary File Write

CVE-2026-30853

calibre has a Path Traversal Leading to Arbitrary File Write PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
kovidgoyal / calibre	affected < 9.5.0

CWE

CWE-22

References

https://github.com/kovidgoyal/calibre/security/advisories/GHSA-7mp7-rfrg-542x

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.