VDB
CVE-2026-30853
CVE-2026-30853
PUBLISHED
CVSS 5 MEDIUM
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.
EPSS 0.19% · 8.7th percentile
Risk Scores
CVSS 3.1
5
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:L
EPSS Score
0.19%
8.7th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| calibre-ebook | calibre | 0 |
| kovidgoyal | calibre | < 9.5.0, 0 |
Timeline
- Mar 13, 2026 CVE Published
- Mar 13, 2026 CVE Updated
- Mar 14, 2026 EPSS Score
- Mar 15, 2026 EPSS Score
- Mar 17, 2026 EPSS Score
- Mar 17, 2026 Coalition ESS Score
- Mar 18, 2026 EPSS Score
- Mar 19, 2026 EPSS Score
- Mar 21, 2026 EPSS Score
- Mar 22, 2026 EPSS Score
- Mar 23, 2026 EPSS Score
- Mar 25, 2026 EPSS Score