Path traversal in Calibre - CVE-2026-26064
Published: February 20, 2026
Vulnerability identifier: #VU123106
CSH Severity: High
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-26064
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences within ODT reader. A remote attacker can write arbitrary files on the system, leading to arbitrary code execution.
Affected software
Calibre
How to mitigate CVE-2026-26064
Install updates from vendor's website.
Calibre - update to 9.3.0