VulnerabilityPublished 12 Nov 2026

CVE-2026-86323: Red Hat Satellite 6 · Insecure Direct Object Reference

Affects Red Hat Satellite 6Source CVE Database V5

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Not known to be exploited · CVSS 4.3 Medium.

Data as of 12 Nov 2026, 20:48 UTC

CVSS 3.1 base score

4.3Medium

How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none

CVSS scores by source
CNA (redhat)	CVSS 3.1	4.3

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: None
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 12 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 12 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Red Hat Satellite 6foreman	Affected–	Fixed in–

AI-suggested

As of the vendor advisory, no explicit patch or fix version is stated. Until a fix is available, restrict access to the affected API endpoints to trusted users only and monitor for updates from Red Hat. No vendor advisory states that no action is required or that the issue is already mitigated.

Description

CVE-2026-86323 is an authorization bypass vulnerability in Red Hat Satellite 6's Foreman component, specifically in the Api::V2::MailNotificationsController. The flaw allows insufficient authorization checks on user-specific mail-notification resources, enabling users to access or modify other users' mail-notification configurations without proper permission. This includes disclosing mail_query values and potentially creating or changing notification settings for other users.

Impact

An attacker with low privileges can disclose another user's mail-notification configuration, including sensitive mail_query values. Where write permissions apply, the attacker can modify or create mail-notification settings for other users. The impact is limited to confidentiality loss of mail-notification data with no integrity or availability impact. The CVSS v3.1 base score is 4.3 (medium severity) reflecting low confidentiality impact and no integrity or availability impact.

Summary

The vulnerability exists in Foreman’s Api::V2::MailNotificationsController where the GET /api/v2/users/:id/mail_notifications endpoint uses User.find(params[:id]) without verifying that the authenticated user is authorized to access that user's mail-notification configuration. Additionally, the POST and PUT endpoints call deny_access when unauthorized but fail to halt execution, allowing unauthorized changes to persist despite a 403 response. This results in an authorization bypass that can disclose or modify another user's mail-notification settings. The issue is tracked as CWE-639 (Authorization Bypass Through User-Controlled Key).

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 12 Nov 2026, 20:47 UTC

Technical details

References

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