{"id":"CVE-2026-12423","published":"2026-10-01T17:17:19.887","lastModified":"2026-10-07T07:16:59.810","description":"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 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.","cvssScore":7.5,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","cwes":["CWE-306"],"vendors":[],"products":[],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:74503","tags":[]},{"url":"https://access.redhat.com/errata/RHSA-2026:74504","tags":[]},{"url":"https://access.redhat.com/errata/RHSA-2026:74505","tags":[]},{"url":"https://access.redhat.com/errata/RHSA-2026:74506","tags":[]},{"url":"https://access.redhat.com/security/cve/CVE-2026-12423","tags":[]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2488956","tags":[]},{"url":"http://www.openwall.com/lists/oss-security/2026/10/07/10","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"Foreman's unattended provisioning API endpoint allows attackers to bypass authentication by accessing kickstart templates without providing a valid provisioning token, even though the system only checks the database state of the token rather than its presence in the HTTP request.","exploitability":"Exploitation is straightforward as attackers can simply access the /unattended/provision endpoint without any token parameter, taking advantage of the semantic logic flaw that validates database state instead of actual request parameters.","blast_radius":"The impact could be significant as attackers may gain access to sensitive kickstart templates and potentially automate provisioning workflows, leading to unauthorized system configurations and potential lateral movement within the infrastructure.","remediation":"Upgrade to Foreman 3.10 or later to address this authentication bypass vulnerability in the unattended/provision API endpoint.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["auth-bypass","api","provisioning","foreman"],"model":"garnet-coder","analyzedAt":"2026-10-13T09:04:56.139Z"}}