calibre is an e-book manager. In 9.1.0 and earlier, a path traversal vulnerability in Calibre's EPUB conversion allows a malicious EPUB file to corrupt arbitrary existing files writable by the Calibre process. During conversion, Calibre resolves CipherReference URI from META-INF/encryption.xml to an absolute filesystem path and opens it in read-write mode, even when it points outside the conversion extraction directory. This vulnerability is fixed in 9.2.0.
Exploitability
AV:LAC:LPR:NUI:RScope
S:CImpact
C:NI:HA:H8.2/CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:HInjection
Input Validation