CVSS 3.1
8.2 highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:HCVE-2026-30853
High (8.2) in calibre-ebook calibre. EPSS 0.2% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 8% of CVEs (scores of 2026-10-31)
- CWE
- CWE-22
- Published
- Modified
- Record from
- the NVD, synced
Affected
- calibre-ebook:calibre