{"id":"CVE-2026-12423","title":"A flaw was found in Foreman","summary":"A flaw was found in Foreman. The Red Hat Satellite /unattended/provision API endpoint is vulnerable to an authentication bypass due to a semantic logic flaw in host_verifier.rb. The application verifies the database state of a provisioni…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-306"],"vendor":"redhat","product":"satellite","affected":["satellite >= 6.16, < 6.16.4","satellite >= 6.17, < 6.17.12","satellite >= 6.19, < 6.19.5","foreman","satellite >= 6.18, < 6.18.10","satellite = 6.0"],"patched":["satellite 6.18.10"],"published":"2026-10-01","updated":"2026-10-08","sourceUpdated":"2026-10-08T13:16:40.427","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-12423","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:74503","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:74504","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:74505","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:74506","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-12423","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2488956","label":"secalert@redhat.com"},{"url":"http://www.openwall.com/lists/oss-security/2026/10/07/10","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12423.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-12423"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-12423"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00384,"epssPercentile":0.32246,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-01T17:36:22.572043Z"},"ingestedAt":"2026-10-01T18:55:42.359Z","slug":"CVE-2026-12423","body":"## Overview\n\nA flaw was found in Foreman. The Red Hat Satellite /unattended/provision API endpoint is vulnerable to an authentication bypass due to a semantic logic flaw in host_verifier.rb. The application verifies the database state of a provisioning token rather than its actual presence in the incoming HTTP request. Because a host actively undergoing provisioning has an unexpired token in the database, the server's valid_host_token? method evaluates to true, granting access to the kickstart template even if the requester provides no token at all in the URL.\n\n## Affected\n\n- `satellite >= 6.16, < 6.16.4`\n- `satellite >= 6.17, < 6.17.12`\n- `satellite >= 6.19, < 6.19.5`\n- `foreman`\n- `satellite >= 6.18, < 6.18.10`\n- `satellite = 6.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `satellite 6.18.10`\n\n## Vendor advisories\n\n- **RHSA-2026:74506** · Red Hat · fixed in: Red Hat Satellite 6.16 for RHEL 8, Red Hat Satellite 6.16 for RHEL 9 · released 2026-10-01 · [advisory](https://access.redhat.com/errata/RHSA-2026:74506)\n- **RHSA-2026:74504** · Red Hat · fixed in: Red Hat Satellite 6.18 for RHEL 9 · released 2026-10-01 · [advisory](https://access.redhat.com/errata/RHSA-2026:74504)\n- **RHSA-2026:74503** · Red Hat · fixed in: Red Hat Satellite 6.19 for RHEL 9 · released 2026-10-01 · [advisory](https://access.redhat.com/errata/RHSA-2026:74503)\n- **Red Hat VEX** · Important · affected: Red Hat Satellite 6 · no fix planned: Red Hat Satellite 6 · updated 2026-10-02 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12423.json)\n- **RHSA-2026:74505** · Red Hat · fixed in: Red Hat Satellite 6.17 for RHEL 9 · released 2026-10-01 · [advisory](https://access.redhat.com/errata/RHSA-2026:74505)","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}