Description
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.
CVSS Metrics
- Vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:H
- Attack Vector
- local
- Complexity
- low
- Privileges
- none
- User Action
- required
- Scope
- changed
- Confidentiality
- none
- Integrity
- high
- Availability
- high
- Weaknesses
- CWE-22CWE-73CWE-94
Metadata
- Primary Vendor
- UNKNOWN
- Published
- 2/6/2026
- Last Modified
- 2/11/2026
- Source
- NIST NVD
- Note: Verify all details with official vendor sources before applying patches.
Affected Products
No affected products information available.
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