{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-73249", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-11T17:18:01.597Z", "datePublished": "2026-08-11T21:58:43.415Z", "dateUpdated": "2026-08-11T21:58:43.415Z"}, "containers": {"cna": {"title": "calibre Content Server `/book-update-annotations` Missing Write Authorization Check Allows Unauthorized Annotation Modification", "problemTypes": [{"descriptions": [{"cweId": "CWE-862", "lang": "en", "description": "CWE-862: Missing Authorization", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/kovidgoyal/calibre/security/advisories/GHSA-5x64-w63v-x2g6", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/kovidgoyal/calibre/security/advisories/GHSA-5x64-w63v-x2g6"}, {"name": "https://github.com/kovidgoyal/calibre/commit/71295e8b62801e1ccecaa4fac47e6942f11cfe1e", "tags": ["x_refsource_MISC"], "url": "https://github.com/kovidgoyal/calibre/commit/71295e8b62801e1ccecaa4fac47e6942f11cfe1e"}, {"name": "https://github.com/kovidgoyal/calibre/releases/tag/v9.12.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/kovidgoyal/calibre/releases/tag/v9.12.0"}], "affected": [{"vendor": "kovidgoyal", "product": "calibre", "versions": [{"version": "< 9.12.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-11T21:58:43.415Z"}, "descriptions": [{"lang": "en", "value": "calibre is an e-book manager. Prior to 9.12.0, the calibre Content Server endpoint POST /book-update-annotations/{library_id}/{book_id}/{fmt} in src/calibre/srv/books.py omits needs_db_write=True, causing Router.dispatch() to skip ctx.check_for_write_access() before update_annotations() passes attacker-controlled JSON to db.merge_annotations_for_book(), which allows a readonly user or an anonymous user on an unauthenticated deployment to persist unauthorized book annotation changes. This issue is fixed in version 9.12.0."}], "source": {"advisory": "GHSA-5x64-w63v-x2g6", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "calibre", "vendor": "kovidgoyal", "versions": [{"status": "affected", "version": "< 9.12.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "calibre is an e-book manager. Prior to 9.12.0, the calibre Content Server endpoint POST /book-update-annotations/{library_id}/{book_id}/{fmt} in src/calibre/srv/books.py omits needs_db_write=True, causing Router.dispatch() to skip ctx.check_for_write_access() before update_annotations() passes attacker-controlled JSON to db.merge_annotations_for_book(), which allows a readonly user or an anonymous user on an unauthenticated deployment to persist unauthorized book annotation changes. This issue is fixed in version 9.12.0."}], "id": "CVE-2026-73249", "lastModified": "2026-08-11T22:19:05.687", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-08-11T22:19:05.687", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/kovidgoyal/calibre/commit/71295e8b62801e1ccecaa4fac47e6942f11cfe1e"}, {"source": "security-advisories@github.com", "url": "https://github.com/kovidgoyal/calibre/releases/tag/v9.12.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/kovidgoyal/calibre/security/advisories/GHSA-5x64-w63v-x2g6"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-862"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}