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CVE-2026-86323

Foreman: authorization flaw in the mail-notification endpoints implemented by api::v2::mailnotificationscontroller

  • Medium 4.3

Description

A flaw was found in Foreman’s Api::V2::MailNotificationsController, where authorization checks on user-specific mail-notification resources are insufficient. The GET /api/v2/users/:id/mail_notifications endpoint resolves the target account using User.find(params[:id]) without verifying that the authenticated user is authorized to access that user’s notification configuration. Additionally, the POST and PUT /api/v2/users/:user_id/mail_notifications paths call deny_access when the requester is unauthorized but fail to halt execution, allowing the request to continue and persist the unauthorized change despite a 403 response or subsequent DoubleRenderError. This can allow a user to disclose another user’s mail-notification configuration, including mail_query values, and, where write permissions apply, modify or create notification settings for another user.

Key facts

Published
12 Nov 2026
Last changed
13 Nov 2026
Assigned by
redhat
EPSS
0.389% likely to be exploited in the next 30 days, higher than 33.53% of CVEs (scores for 15 Nov 2026)
SSVC (CISA)
Exploitation: none; Automatable: no; Technical impact: partial

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 4.3CVSS 3.1, Mediumfrom the CNA (redhat)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

No explicit remediation statement is available on this page yet. Consult the original record and vendor references before choosing a fix.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
Red HatRed Hat Satellite 6.16 for RHEL 8
  • Default status: affected
  • 0:3.12.0.26-1.el8sat up to but excluding * (unaffected)
Red HatRed Hat Satellite 6.16 for RHEL 9
  • Default status: affected
  • 0:3.12.0.26-1.el9sat up to but excluding * (unaffected)
Red HatRed Hat Satellite 6.17 for RHEL 9
  • Default status: affected
  • 0:3.14.0.26-1.el9sat up to but excluding * (unaffected)
Red HatRed Hat Satellite 6.18 for RHEL 9
  • Default status: affected
  • 0:3.16.0.29-1.el9sat up to but excluding * (unaffected)
Red HatRed Hat Satellite 6.19 for RHEL 9
  • Default status: affected
  • 0:3.18.0.19-1.el9sat up to but excluding * (unaffected)

Timeline

  1. 7 Sep 2026 Reported to Red Hat.
  2. 12 Nov 2026 Made public.
  3. 12 Nov 2026 Published

Weakness

References