CVE-2026-75886

Openshift/console: openshift/console: unauthenticated reverse proxy to in-cluster catalogd service with session token forwarding

Published Sep 23, 2026 CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
Description
A flaw was found in openshift/console. An unauthenticated remote attacker can exploit a misconfiguration in the CatalogdHandler, which lacks proper authentication, and the forwarding of the `openshift-session-token` cookie. This allows the attacker to send requests to the in-cluster catalogd service, leading to the disclosure of the internal operator-catalog index and providing a relay into the openshift-catalogd namespace.

Remediation

Vendor Workaround

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:4.17::el9
cpe:/a:redhat:openshift:4.18::el9
References
Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:4.20::el9
cpe:/a:redhat:openshift:4.21::el9
cpe:/a:redhat:openshift:4.22::el9
References
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Redhat openshift Container Platform
Vendors & Products Redhat openshift Container Platform
Type Values Removed Values Added
Description A flaw was found in openshift/console. An unauthenticated remote attacker can exploit a misconfiguration in the CatalogdHandler, which lacks proper authentication, and the forwarding of the `openshift-session-token` cookie. This allows the attacker to send requests to the in-cluster catalogd service, leading to the disclosure of the internal operator-catalog index and providing a relay into the openshift-catalogd namespace.
Title Openshift/console: openshift/console: unauthenticated reverse proxy to in-cluster catalogd service with session token forwarding
First Time appeared Redhat
Redhat openshift
Weaknesses CWE-441
CPEs cpe:/a:redhat:openshift:4
Vendors & Products Redhat
Redhat openshift
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Oct 1, 2026, 4:35 PM
Reserved
Aug 18, 2026, 1:44 PM
Status
Awaiting Analysis
Published
Sep 23, 2026, 9:17 PM
Modified
Oct 1, 2026, 5:17 PM
Severity
Important
Public date
Sep 23, 2026, 8:05 PM