CVE-2026-12423

Foreman: unauthenticated information disclosure via provisioning token validation flaw

HIGH
7.5
CVSS Score
Published: October 1, 2026 at 04:21 PM UTC
Updated: October 8, 2026 at 01:16 PM UTC
2 products affected across 2 vendorsSatelliteForeman· also runs on 1 platform

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Severity
HIGH7.5
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.16 ≤ v < 6.16.46.17 ≤ v < 6.17.126.18 ≤ v < 6.18.106.19 ≤ v < 6.19.5*66.0
Vendor states this is fixed in 0:3.12.0.23-1.el8sat (unaffected)
Vendor states this is fixed in 0:3.12.0.23-1.el9sat (unaffected)
Vendor states this is fixed in 0:3.14.0.22-1.el9sat (unaffected)
Vendor states this is fixed in 0:3.16.0.25-1.el9sat (unaffected)
Vendor states this is fixed in 0:3.18.0.14-1.el9sat (unaffected)
Affected range stops below 6.16.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.17.12, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.18.10, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.19.5, so it looks safe — our inference, not a vendor statement
redhat-enterprise-linux (environment)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

References (7)

Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:74503
VDB Entryx_refsource_REDHATVendor Advisory
Source: cverecord
https://access.redhat.com/security/cve/CVE-2026-12423
Issue Trackingx_refsource_REDHATVendor Advisory
Source: cverecord
https://bugzilla.redhat.com/show_bug.cgi?id=2488956
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:74504
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:74506
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:74505
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2026/10/07/10

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHredhat
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-306

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