CVE-2026-12423 Foreman - Authentication Bypass

Foreman contains an authentication bypass caused by a semantic logic flaw in host_verifier.rb in the /unattended/provision API endpoint, letting attackers access kickstart templates without providing a token, exploit requires crafted request without token.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.36% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
1 October 2026
Updated
15 October 2026
Weakness
CWE-306

Vendor fix

Update to the latest version containing the fix.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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