{"id":"CVE-2026-104048","title":"A flaw was found in SSSD","summary":"A flaw was found in SSSD. In trust-enabled identity management environments, SSSD evaluates Host-Based Access Control (HBAC) rules by stripping domain qualifiers and comparing only short usernames. An authenticated user in a trusted doma…","severity":"medium","cvss":6.8,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","cwe":["CWE-1025"],"vendor":"fedoraproject","product":"sssd","affected":["sssd = 2.12.0","openshift_container_platform = 4.0","enterprise_linux = 7.0","enterprise_linux = 8.0","enterprise_linux = 9.0","enterprise_linux = 10.0"],"published":"2026-10-06","updated":"2026-10-09","sourceUpdated":"2026-10-09T12:54:42.760","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-104048","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-104048","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2478613","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2478613","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-104048.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-104048"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-104048"}],"tags":["nvd","cve.org","exploit-available","csaf","vex","red-hat"],"epss":0.00301,"epssPercentile":0.22736,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-10-07T14:32:33.019028Z"},"ingestedAt":"2026-10-06T20:16:42.489Z","slug":"CVE-2026-104048","body":"## Overview\n\nA flaw was found in SSSD. In trust-enabled identity management environments, SSSD evaluates Host-Based Access Control (HBAC) rules by stripping domain qualifiers and comparing only short usernames. An authenticated user in a trusted domain who shares the same username as an authorized local account can bypass access policies and gain unauthorized access to protected services or hosts.\n\n## Affected\n\n- `sssd = 2.12.0`\n- `openshift_container_platform = 4.0`\n- `enterprise_linux = 7.0`\n- `enterprise_linux = 8.0`\n- `enterprise_linux = 9.0`\n- `enterprise_linux = 10.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-10-09 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-104048.json)","depth":"twilight","depthScore":49,"depthScoreParts":{"impact":37.4,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":217547,"id":"CVE-2026-104048","ts":1791387415769,"field":"exploit_available","old":"false","new":"true"}]}