CVE-2026-25636
HIGH WAF: High
CVSS 7.8
Published: 2026-02-06
CWE-22 CWE-94 CWE-22
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.
WAF Coverage Analysis
Path Traversal
High WAF Coverage
OWASP: A01:2021 Broken Access Control
930xxx - Local File Inclusion
Code Injection
Medium WAF Coverage
OWASP: A03:2021 Injection
932xxx - Remote Code Execution 933xxx - PHP Injection 934xxx - Node.js / Generic Injection
Path Traversal
High WAF Coverage
OWASP: A01:2021 Broken Access Control
930xxx - Local File Inclusion
Affected Software
| Vendor | Product | Version |
|---|---|---|
| calibre-ebook | calibre | up to 9.2.0 |
References
- github.com (Patch)
- github.com (Exploit, Third Party Advisory)
- 0x5t.raptx.org (Exploit, Third Party Advisory)