---
id: CVE-2026-75886
title: A flaw was found in openshift/console
summary: >-
  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 t…
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-441
vendor: Red Hat
product: openshift4/ose-console-rhel9
affected:
  - openshift4/ose-console-rhel9 (all versions)
  - openshift4/ose-console-rhel9 (all versions)
  - openshift4/ose-console-rhel9 (all versions)
  - openshift4/ose-console-rhel9 (all versions)
  - openshift4/ose-console-rhel9 (all versions)
  - openshift4/ose-console-rhel9 (all versions)
  - openshift4/ose-console
patched:
  - openshift_container_platform 4.20
  - openshift_container_platform 4.21
  - openshift_container_platform 4.22
published: '2026-09-23'
updated: '2026-10-01'
sourceUpdated: '2026-10-01T17:17:31.437'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-75886'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2026:70587'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:70617'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:71447'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:71450'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:71453'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:71454'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2026-75886'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2517886'
    label: secalert@redhat.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-75886.json
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-75886'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-75886'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-24T13:53:58.349525Z'
epss: 0.00331
epssPercentile: 0.26162
ingestedAt: '2026-09-23T21:33:13.537Z'
---

## Overview

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

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Important · affected: Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat OpenShift Container Platform 4 · updated 2026-09-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-75886.json)
- **RHSA-2026:71450** · Red Hat · fixed in: Red Hat OpenShift Container Platform 4.20 · released 2026-09-29 · [advisory](https://access.redhat.com/errata/RHSA-2026:71450)
- **RHSA-2026:71453** · Red Hat · fixed in: Red Hat OpenShift Container Platform 4.21 · released 2026-09-29 · [advisory](https://access.redhat.com/errata/RHSA-2026:71453)
- **RHSA-2026:71454** · Red Hat · fixed in: Red Hat OpenShift Container Platform 4.22 · released 2026-09-29 · [advisory](https://access.redhat.com/errata/RHSA-2026:71454)