{"id":"CVE-2026-104048","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-104048","generatedAt":"2026-10-28T05:28:06.018Z","title":"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.","description":"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 domain who shares the same username as an authorized local account can bypass access policies and gain unauthorized access to protected services or hosts.","published":"2026-10-06T20:17:15.000Z","lastModified":"2026-10-09T12:54:43.000Z","status":"Analyzed","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"3.1","score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"},"cwe":["CWE-1025"],"affected":["fedoraproject/sssd","redhat/openshift container platform","redhat/enterprise linux"],"epss":{"score":0.00301,"percentile":0.22736,"date":"2026-10-27","history":[{"date":"2026-10-07","score":0.00276,"percentile":0.18353}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.30%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"scored","label":"Newly scored","at":"2026-10-09T14:45:10.000Z","detail":{"from":"6.8","score":"8.1","severity":"HIGH","fromSeverity":"MEDIUM"},"summary":"Now scored CVSS 8.1 HIGH (was 6.8)."},{"kind":"new","label":"New CVE","at":"2026-10-06T20:17:15.000Z","detail":{"score":"6.8","severity":"MEDIUM","publishedAt":"2026-10-06T20:17:14.977Z"},"summary":"New CVE, high severity (CVSS 8.1)."}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-104048","tags":["Vendor Advisory","Issue Tracking"],"source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2478613","tags":["Exploit","Issue Tracking","Mitigation","Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2478613","tags":["Exploit","Issue Tracking","Mitigation","Vendor Advisory"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-104048","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}