Foreman: unauthenticated information disclosure via provisioning token validation flaw

Summary

CVE	CVE-2026-12423
State	PUBLISHED
Assigner	redhat
Source Priority	CVE Program / NVD first with legacy fallback
Published	2026-10-01 17:17:19 UTC
Updated	2026-10-08 13:16:40 UTC
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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS: 0.003800000 probability, percentile 0.296210000 (date 2026-10-05)

Problem Types: CWE-306 | CWE-306 Missing Authentication for Critical Function

Version	Source	Type	Score	Severity	Vector
3.1	[email protected]	Secondary	7.5	HIGH	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`
3.1	CNA	CVSS	7.5	HIGH	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`

CVSS v3.1 Breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

NVD Known Affected Configurations (CPE 2.3)

Type	Vendor	Product	Version	Update	Edition	Language
Operating System	Redhat	Enterprise Linux	8.0	All	All	All
Operating System	Redhat	Enterprise Linux	9.0	All	All	All
Application	Redhat	Satellite	All	All	All	All

Vendor Declared Affected Products

Source	Vendor	Product	Version	Platforms
CNA	Red Hat	Red Hat Satellite 6.16 For RHEL 8	unaffected 0:3.12.0.23-1.el8sat * rpm	Not specified
CNA	Red Hat	Red Hat Satellite 6.16 For RHEL 9	unaffected 0:3.12.0.23-1.el9sat * rpm	Not specified
CNA	Red Hat	Red Hat Satellite 6.17 For RHEL 9	unaffected 0:3.14.0.22-1.el9sat * rpm	Not specified
CNA	Red Hat	Red Hat Satellite 6.18 For RHEL 9	unaffected 0:3.16.0.25-1.el9sat * rpm	Not specified
CNA	Red Hat	Red Hat Satellite 6.19 For RHEL 9	unaffected 0:3.18.0.14-1.el9sat * rpm	Not specified
CNA	Red Hat	Red Hat Satellite 6	Not specified	Not specified

References

Reference	Source	Link	Tags
access.redhat.com/errata/RHSA-2026:74506	[email protected]	access.redhat.com	Vendor Advisory
access.redhat.com/security/cve/CVE-2026-12423	[email protected]	access.redhat.com	Vendor Advisory
access.redhat.com/errata/RHSA-2026:74505	[email protected]	access.redhat.com	Vendor Advisory
access.redhat.com/errata/RHSA-2026:74504	[email protected]	access.redhat.com	Vendor Advisory
www.openwall.com/lists/oss-security/2026/10/07/10	af854a3a-2127-422b-91ae-364da2661108	www.openwall.com	Third Party Advisory
access.redhat.com/errata/RHSA-2026:74503	[email protected]	access.redhat.com	Vendor Advisory
bugzilla.redhat.com/show_bug.cgi	[email protected]	bugzilla.redhat.com	Issue Tracking, Vendor Advisory
CVE Program record	CVE.ORG	www.cve.org	canonical
NVD vulnerability detail	NVD	nvd.nist.gov	canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: This issue was discovered by Laura Pardo (Red Hat) and Toni Gornals (Red Hat). (en)

Additional Advisory Data

Source	Time	Event
CNA	2026-06-15T17:56:43.109Z	Reported to Red Hat.
CNA	2026-10-01T12:20:00.000Z	Made public.

Workarounds

CNA: Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.

There are currently no legacy QID mappings associated with this CVE.