VULNERABILITY INTELLIGENCE

CVE-2026-30853

CVSS score5 MEDIUM
EPSS probability0.19%
CISA KEVNot currently listed
Published2026-03-13
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:L

Description

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.

Weakness classification

  • security-advisories@github.com: CWE-22

Primary references