Directory Traversal Affecting calibre package, versions <9.5.0+ds+~0.10.5-1


Severity

Recommended
0.0
high
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
0.18% (8th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-DEBIANUNSTABLE-CALIBRE-15662589
  • published16 Mar 2026
  • disclosed13 Mar 2026

Introduced: 13 Mar 2026

CVE-2026-30853  (opens in a new tab)
CWE-22  (opens in a new tab)

How to fix?

Upgrade Debian:unstable calibre to version 9.5.0+ds+~0.10.5-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream calibre package and not the calibre package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1