{ "cveId": "CVE-2026-40205", "url": "https://patchblox.com/security/cve/CVE-2026-40205", "summary": "CVE-2026-40205 is fixed in 12 products on 1 platform, first by SUSE-SU-2026:23595-1, released September 1, 2026. It is not reported as exploited. Patch Radar priority: Routine.", "title": "dovecot: An attacker that holds an OAuth2 token granting only part of the required scopes can authenticate, because when more...", "description": "An attacker that holds an OAuth2 token granting only part of the required scopes can authenticate, because when more than one scope is required in the configuration, the remote token validation paths accept a token that carries only one of them, while the local token validation path correctly requires all of them. The configured authorization policy is not enforced, so a token that was granted only part of the required permissions is accepted where it should have been rejected. Use local token validation where tokens can be validated locally. Update to non-vulnerable version. No publicly available exploits are known.", "published": "2026-08-28T12:16:29Z", "severity": "medium", "cvss": 5.9, "cvssVector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N", "epss": 0.00211, "epssPercentile": 0.11357, "priority": "Routine", "priorityTier": 4, "exploited": false, "vendorExploited": false, "disclosed": false, "fixes": [ { "platform": "linux", "product": "dovecot", "release": "Debian 12.15 (bookworm)", "fixedVersion": "1:2.3.19.1\u002Bdfsg1-2.1\u002Bdeb12u7", "fix": "DEBIAN-CVE-2026-40205", "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-40205", "released": "2026-09-10T12:12:19Z" }, { "platform": "linux", "product": "dovecot", "release": "Debian 13.5 (trixie)", "fixedVersion": "1:2.4.1\u002Bdfsg1-6\u002Bdeb13u7", "fix": "DEBIAN-CVE-2026-40205", "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-40205", "released": "2026-09-10T12:12:19Z" }, { "platform": "linux", "product": "dovecot", "release": "Debian 14", "fixedVersion": "1:2.4.5\u002Bdfsg1-1", "fix": "DEBIAN-CVE-2026-40205", "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-40205", "released": "2026-09-10T12:12:19Z" }, { "platform": "linux", "product": "dovecot", "release": "Fedora 43", "fixedVersion": "1:2.4.5-1.fc43", "fix": "FEDORA-2026-E8A6485109", "url": "https://patchblox.com/security/fix/linux/fedora-2026-e8a6485109", "released": "2026-09-10T05:35:17Z" }, { "platform": "linux", "product": "dovecot-debuginfo", "release": "Fedora 43", "fixedVersion": "1:2.4.5-1.fc43", "fix": "FEDORA-2026-E8A6485109", "url": "https://patchblox.com/security/fix/linux/fedora-2026-e8a6485109", "released": "2026-09-10T05:35:17Z" }, { "platform": "linux", "product": "dovecot-debugsource", "release": "Fedora 43", "fixedVersion": "1:2.4.5-1.fc43", "fix": "FEDORA-2026-E8A6485109", "url": "https://patchblox.com/security/fix/linux/fedora-2026-e8a6485109", "released": "2026-09-10T05:35:17Z" }, { "platform": "linux", "product": "dovecot-devel", "release": "Fedora 43", "fixedVersion": "1:2.4.5-1.fc43", "fix": "FEDORA-2026-E8A6485109", "url": "https://patchblox.com/security/fix/linux/fedora-2026-e8a6485109", "released": "2026-09-10T05:35:17Z" }, { "platform": "linux", "product": "dovecot-mysql", "release": "Fedora 43", "fixedVersion": "1:2.4.5-1.fc43", "fix": "FEDORA-2026-E8A6485109", "url": "https://patchblox.com/security/fix/linux/fedora-2026-e8a6485109", "released": "2026-09-10T05:35:17Z" }, { "platform": "linux", "product": "dovecot-mysql-debuginfo", "release": "Fedora 43", "fixedVersion": "1:2.4.5-1.fc43", "fix": "FEDORA-2026-E8A6485109", "url": "https://patchblox.com/security/fix/linux/fedora-2026-e8a6485109", "released": "2026-09-10T05:35:17Z" }, { "platform": "linux", "product": "dovecot-pgsql", "release": "Fedora 43", "fixedVersion": "1:2.4.5-1.fc43", "fix": "FEDORA-2026-E8A6485109", "url": "https://patchblox.com/security/fix/linux/fedora-2026-e8a6485109", "released": "2026-09-10T05:35:17Z" }, { "platform": "linux", "product": "dovecot-pgsql-debuginfo", "release": "Fedora 43", "fixedVersion": "1:2.4.5-1.fc43", "fix": "FEDORA-2026-E8A6485109", "url": "https://patchblox.com/security/fix/linux/fedora-2026-e8a6485109", "released": "2026-09-10T05:35:17Z" }, { "platform": "linux", "product": "dovecot-pigeonhole", "release": "Fedora 43", "fixedVersion": "1:2.4.5-1.fc43", "fix": "FEDORA-2026-E8A6485109", "url": "https://patchblox.com/security/fix/linux/fedora-2026-e8a6485109", "released": "2026-09-10T05:35:17Z" }, { "platform": "linux", "product": "dovecot-pigeonhole-debuginfo", "release": "Fedora 43", "fixedVersion": "1:2.4.5-1.fc43", "fix": "FEDORA-2026-E8A6485109", "url": "https://patchblox.com/security/fix/linux/fedora-2026-e8a6485109", "released": "2026-09-10T05:35:17Z" }, { "platform": "linux", "product": "dovecot23", "release": "sles 15.6", "fixedVersion": "2.3.21.1-150200.76.1", "fix": "SUSE-SU-2026:4139-1", "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4139-1", "released": "2026-09-14T07:22:32Z" }, { "platform": "linux", "product": "dovecot23", "release": "sles 15.7", "fixedVersion": "2.3.21.1-150200.76.1", "fix": "SUSE-SU-2026:4139-1", "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4139-1", "released": "2026-09-14T07:22:32Z" }, { "platform": "linux", "product": "dovecot24", "release": "opensuse-leap 16.0", "fixedVersion": "2.4.4-160000.2.1", "fix": "OPENSUSE-SU-2026:21720-1", "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21720-1", "released": "2026-09-01T14:18:02Z" }, { "platform": "linux", "product": "dovecot24", "release": "sles 16.0", "fixedVersion": "2.4.4-160000.2.1", "fix": "SUSE-SU-2026:23595-1", "url": "https://patchblox.com/security/fix/linux/suse-su-2026-23595-1", "released": "2026-09-01T14:12:16Z" } ], "noFixYet": [], "dataAsOf": "2026-11-08T06:59:42Z", "attribution": { "text": "Data: Patchblox Patch Radar", "url": "https://patchblox.com/security/patch-radar", "terms": "https://patchblox.com/security/patch-radar/use-the-data" } }