CVE-2026-61909

{"id": "CVE-2026-61909", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-61909", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-14T15:17:37.307793Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "cve@mitre.org", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 3.5, "attackVector": "NETWORK", "baseSeverity": "LOW", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 1.8}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 2.8}]}, "affected": [{"source": "cve@mitre.org", "affectedData": [{"vendor": "cyrusimap", "product": "Cyrus IMAP", "versions": [{"status": "affected", "version": "0", "lessThan": "3.8.8", "versionType": "semver"}, {"status": "affected", "version": "3.9.0", "lessThan": "3.10.4", "versionType": "semver"}, {"status": "affected", "version": "3.11.0", "lessThan": "3.12.4", "versionType": "semver"}], "defaultStatus": "unaffected"}]}], "published": "2026-09-09T20:18:36.523", "references": [{"url": "https://cyrusimap.org", "tags": ["Product"], "source": "cve@mitre.org"}, {"url": "https://www.cyrusimap.org/3.12/imap/download/release-notes/3.10/x/3.10.4.html", "tags": ["Release Notes"], "source": "cve@mitre.org"}, {"url": "https://www.cyrusimap.org/3.12/imap/download/release-notes/3.12/x/3.12.4.html", "tags": ["Release Notes"], "source": "cve@mitre.org"}, {"url": "https://www.cyrusimap.org/3.12/imap/download/release-notes/3.8/x/3.8.8.html", "tags": ["Release Notes"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "cve@mitre.org", "description": [{"lang": "en", "value": "CWE-420"}]}], "descriptions": [{"lang": "en", "value": "An issue was discovered in Cyrus IMAP before 3.12.4. CalDAV/CardDAV multiget bypasses a per-href ACL. An authenticated DAV user with some shared access to another user's calendar or address book could read even unshared events or contacts by including the target hrefs in a calendar-multiget or addressbook-multiget REPORT."}], "lastModified": "2026-09-16T15:24:24.070", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:cyrus:imap:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "28C57505-AC73-4870-AF38-C27602313743", "versionEndExcluding": "3.8.8"}, {"criteria": "cpe:2.3:a:cyrus:imap:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B34CFCEF-7C23-40E2-8B1C-99574EAEFA83", "versionEndExcluding": "3.10.4", "versionStartIncluding": "3.9.0"}, {"criteria": "cpe:2.3:a:cyrus:imap:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F48F621D-9615-43D9-9086-7A506473291B", "versionEndExcluding": "3.12.4", "versionStartIncluding": "3.11.0"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}