CVE-2026-30853

HIGH EPSS 7.7%
Published Mar 13, 20263mo ago · Modified Mar 18, 20263mo ago
8.2 CVSS 3.1
High
Find Similar
Published Mar 13, 2026 3mo ago
Last Modified Mar 18, 2026 3mo ago

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.

CVSS Details

Base Score
8.2
Exploitability
1.8
Impact
5.8
Vector string
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality None
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
7.7% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-22 Path Traversal Resource Mgmt

Affected Products 1

VendorProductVersionRange
calibre-ebookcalibre* <9.5.0

References 1

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.