{"id":"CVE-2026-104046","aliases":["DEBIAN-CVE-2026-104046","EUVD-2026-93984","GHSA-35vq-gvvv-mccw","UBUNTU-CVE-2026-104046"],"status":"published","title":"Sssd: sssd: denial of service via incomplete identity provider authentication requests","description":"A flaw was found in SSSD (System Security Services Daemon). When Identity Provider (IdP) authentication is enabled, pre-authentication requests retain state in memory without being cleared or timed out. A local attacker can repeatedly initiate authentication flows without completing them, causing unbounded memory consumption. This memory exhaustion can lead to a Denial of Service (DoS) by degrading or terminating SSSD authentication services.","severity":{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.0016,"percentile":0.05261,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-770"],"published":"2026-10-06T20:03:06Z","modified":"2026-11-07T11:00:07Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.10.1-1","2.10.1-2","2.11.1-1","2.11.1-2","2.11.1-2.1","2.12.0-1","2.12.0-2","2.12.0-3~exp0","2.12.0-4","2.13.1-1","2.13.1-2","2.13.1-3","2.13.1-4","2.8.2-4","2.8.2-4+deb12u1","2.9.1-1","2.9.1-2","2.9.2-1","2.9.4-1","2.9.4-1.1","2.9.4-1.1~exp1","2.9.4-2","2.9.5-1","2.9.5-2","2.9.5-3","2.9.5-4","2.9.5-5"]},{"source":"osv","ecosystem":"Debian:13","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.10.1-2","2.11.1-1","2.11.1-2","2.11.1-2.1","2.12.0-1","2.12.0-2","2.12.0-3~exp0","2.12.0-4","2.13.1-1","2.13.1-2","2.13.1-3","2.13.1-4"]},{"source":"osv","ecosystem":"Debian:14","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.10.1-2","2.11.1-1","2.11.1-2","2.11.1-2.1","2.12.0-1","2.12.0-2","2.12.0-3~exp0","2.12.0-4","2.13.1-1","2.13.1-2","2.13.1-3","2.13.1-4"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.12.5-2","1.13.1-2","1.13.2-1","1.13.3-1","1.13.4-1","1.13.4-1ubuntu1","1.13.4-1ubuntu1.1","1.13.4-1ubuntu1.2","1.13.4-1ubuntu1.5","1.13.4-1ubuntu1.6","1.13.4-1ubuntu1.7","1.13.4-1ubuntu1.8","1.13.4-1ubuntu1.9","1.13.4-1ubuntu1.10","1.13.4-1ubuntu1.11","1.13.4-1ubuntu1.12","1.13.4-1ubuntu1.13","1.13.4-1ubuntu1.14","1.13.4-1ubuntu1.15","1.13.4-1ubuntu1.15+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.15.3-2ubuntu1","1.15.3-3ubuntu1","1.16.0-5ubuntu1","1.16.0-5ubuntu2","1.16.1-1ubuntu1","1.16.1-1ubuntu1.1","1.16.1-1ubuntu1.2","1.16.1-1ubuntu1.3","1.16.1-1ubuntu1.4","1.16.1-1ubuntu1.5","1.16.1-1ubuntu1.6","1.16.1-1ubuntu1.7","1.16.1-1ubuntu1.8","1.16.1-1ubuntu1.8+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.0-4ubuntu1","2.2.2-1","2.2.2-1ubuntu1","2.2.3-1.1ubuntu1","2.2.3-2","2.2.3-3","2.2.3-3ubuntu0.1","2.2.3-3ubuntu0.2","2.2.3-3ubuntu0.3","2.2.3-3ubuntu0.4","2.2.3-3ubuntu0.6","2.2.3-3ubuntu0.7","2.2.3-3ubuntu0.8","2.2.3-3ubuntu0.9","2.2.3-3ubuntu0.10","2.2.3-3ubuntu0.11","2.2.3-3ubuntu0.12","2.2.3-3ubuntu0.13","2.2.3-3ubuntu0.13+esm1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.4.1-2ubuntu4","2.5.2-4ubuntu1","2.5.2-4ubuntu3","2.5.2-4ubuntu4","2.6.1-1ubuntu3","2.6.3-1ubuntu3","2.6.3-1ubuntu3.1","2.6.3-1ubuntu3.2","2.6.3-1ubuntu3.3","2.6.3-1ubuntu3.4","2.6.3-1ubuntu3.5","2.6.3-1ubuntu3.6","2.6.3-1ubuntu3.8","2.6.3-1ubuntu3.9"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.9.1-2ubuntu2","2.9.1-2ubuntu3","2.9.2-1ubuntu2","2.9.4-1ubuntu1","2.9.4-1.1ubuntu3","2.9.4-1.1ubuntu5","2.9.4-1.1ubuntu6","2.9.4-1.1ubuntu6.1","2.9.4-1.1ubuntu6.2","2.9.4-1.1ubuntu6.3","2.9.4-1.1ubuntu6.4","2.9.4-1.1ubuntu6.5","2.9.4-1.1ubuntu6.6","2.9.4-1.1ubuntu6.7","2.9.4-1.1ubuntu6.8"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.12.0-1ubuntu5","2.12.0-4ubuntu1","2.12.0-4ubuntu2","2.12.0-4ubuntu3","2.12.0-4ubuntu4"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.10.1-2ubuntu5","2.10.1-2ubuntu7","2.12.0-1ubuntu3","2.12.0-1ubuntu4","2.12.0-1ubuntu5","2.12.0-1ubuntu5.1","2.12.0-1ubuntu5.2","2.12.0-1ubuntu5.3","2.12.0-1ubuntu5.4","2.12.0-1ubuntu5.5"]}],"products":[{"vendor":"fedoraproject","product":"sssd"},{"vendor":"red hat","product":"red hat enterprise linux 10"},{"vendor":"red hat","product":"red hat enterprise linux 6"},{"vendor":"red hat","product":"red hat enterprise linux 7"},{"vendor":"red hat","product":"red hat enterprise linux 8"},{"vendor":"red hat","product":"red hat enterprise linux 9"},{"vendor":"red hat","product":"red hat openshift container platform 4"},{"vendor":"red hat","product":"red hat openshift container platform 5"},{"vendor":"redhat","product":"enterprise_linux"},{"vendor":"redhat","product":"openshift_container_platform"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-104046","tags":["vdb-entry","x_refsource_REDHAT","Vendor Advisory","advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2478662","tags":["issue-tracking","x_refsource_REDHAT","Exploit","Issue Tracking","Mitigation","Vendor Advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-104046","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-35vq-gvvv-mccw"},{"url":"https://access.redhat.com/downloads/content/package-browser/","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104046.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-104046","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-104046","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-104046","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-104046","title":"Sssd: sssd: denial of service via incomplete identity provider authentication requests","description":"A flaw was found in SSSD (System Security Services Daemon). When Identity Provider (IdP) authentication is enabled, pre-authentication requests retain state in memory without being cleared or timed out. A local attacker can repeatedly initiate authentication flows without completing them, causing unbounded memory consumption. This memory exhaustion can lead to a Denial of Service (DoS) by degrading or terminating SSSD authentication services.","status":"published","published":"2026-10-06T20:03:06.08Z","modified":"2026-11-05T15:53:06.973Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-770"],"updated_at":"2026-11-05T16:36:33.176634Z"}],"euvd":[{"id":"EUVD-2026-93984","description":"A flaw was found in SSSD (System Security Services Daemon). When Identity Provider (IdP) authentication is enabled, pre-authentication requests retain state in memory without being cleared or timed out. 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This memory exhaustion can lead to a Denial of Service (DoS) by degrading or terminating SSSD authentication services.","status":"published","published":"2026-10-06T21:32:03Z","modified":"2026-10-06T21:32:09Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-770"],"updated_at":"2026-11-02T15:12:52.908481Z"}],"nvd":[{"id":"CVE-2026-104046","description":"A flaw was found in SSSD (System Security Services Daemon). When Identity Provider (IdP) authentication is enabled, pre-authentication requests retain state in memory without being cleared or timed out. A local attacker can repeatedly initiate authentication flows without completing them, causing unbounded memory consumption. This memory exhaustion can lead to a Denial of Service (DoS) by degrading or terminating SSSD authentication services.","status":"published","published":"2026-10-06T21:17:04.3Z","modified":"2026-11-05T16:17:28.873Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-770"],"updated_at":"2026-11-05T19:56:00.556424Z"}],"osv":[{"id":"CVE-2026-104046","title":"Sssd: sssd: denial of service via incomplete identity provider authentication requests","description":"A flaw was found in SSSD (System Security Services Daemon). When Identity Provider (IdP) authentication is enabled, pre-authentication requests retain state in memory without being cleared or timed out. A local attacker can repeatedly initiate authentication flows without completing them, causing unbounded memory consumption. This memory exhaustion can lead to a Denial of Service (DoS) by degrading or terminating SSSD authentication services.","status":"published","published":"2026-10-06T20:03:06.08Z","modified":"2026-11-07T02:30:41.394241228Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-770"],"updated_at":"2026-11-07T03:07:59.573031Z"},{"id":"DEBIAN-CVE-2026-104046","description":"A flaw was found in SSSD (System Security Services Daemon). When Identity Provider (IdP) authentication is enabled, pre-authentication requests retain state in memory without being cleared or timed out. A local attacker can repeatedly initiate authentication flows without completing them, causing unbounded memory consumption. This memory exhaustion can lead to a Denial of Service (DoS) by degrading or terminating SSSD authentication services.","status":"published","published":"2026-10-06T21:17:04.3Z","modified":"2026-11-07T11:00:07.724663665Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-07T11:15:14.449016Z"},{"id":"UBUNTU-CVE-2026-104046","description":"A flaw was found in SSSD (System Security Services Daemon). When Identity Provider (IdP) authentication is enabled, pre-authentication requests retain state in memory without being cleared or timed out. A local attacker can repeatedly initiate authentication flows without completing them, causing unbounded memory consumption. 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