{"id":"CVE-2026-25636","state":"PUBLISHED","title":"calibre has a Path Traversal Leading to Arbitrary File Corruption and Code Execution","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.","publishedAt":"2026-02-06T20:07:40.529Z","updatedAt":"2026-02-11T14:51:19.827Z","severity":{"score":8.2,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["kovidgoyal calibre"],"affected":[{"vendor":"kovidgoyal","product":"calibre","versions":[{"version":"< 9.2.0","status":"affected"}]}],"references":["https://github.com/kovidgoyal/calibre/security/advisories/GHSA-8r26-m7j5-hm29","https://github.com/kovidgoyal/calibre/commit/9484ea82c6ab226c18e6ca5aa000fa16de598726","https://0x5t.raptx.org/posts/calibre-epub-rce"],"weaknesses":["CWE-22","CWE-73","CWE-94"],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/25xxx/CVE-2026-25636.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-25636","state":"PUBLISHED","datePublished":"2026-02-06T20:07:40.529Z","dateUpdated":"2026-02-11T14:51:19.827Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-02-04T05:15:41.790Z"},"containers":{"cna":{"title":"calibre has a Path Traversal Leading to Arbitrary File Corruption and Code Execution","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"kovidgoyal","product":"calibre","versions":[{"version":"< 9.2.0","status":"affected"}]}],"references":[{"url":"https://github.com/kovidgoyal/calibre/security/advisories/GHSA-8r26-m7j5-hm29","name":"https://github.com/kovidgoyal/calibre/security/advisories/GHSA-8r26-m7j5-hm29","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/kovidgoyal/calibre/commit/9484ea82c6ab226c18e6ca5aa000fa16de598726","name":"https://github.com/kovidgoyal/calibre/commit/9484ea82c6ab226c18e6ca5aa000fa16de598726","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-22","lang":"en","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-73","lang":"en","description":"CWE-73: External Control of File Name or Path","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-94","lang":"en","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-02-06T20:07:40.529Z"},"source":{"advisory":"GHSA-8r26-m7j5-hm29","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-09T15:19:25.611213Z","id":"CVE-2026-25636","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-02-09T15:28:11.765Z"}},{"title":"CVE Program Container","references":[{"url":"https://0x5t.raptx.org/posts/calibre-epub-rce"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2026-02-11T14:51:19.827Z"},"x_generator":{"engine":"ADPogram 0.0.1"}}]}}}