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Fencer Vulns
high 7.2

CVE-2026-75886 json

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

published 2026-09-23 46 d ago modified 2026-10-01 38 d ago also EUVD-2026-85665

cvss
7.2
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 26%
public exploits
0
none known

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 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.

Patch / fix

  • Red Hat Red Hat OpenShift Container Platform 4.17 1789939565
  • Red Hat Red Hat OpenShift Container Platform 4.18 1789904865
  • Red Hat Red Hat OpenShift Container Platform 4.19 1790095950
  • Red Hat Red Hat OpenShift Container Platform 4.20 1790112153
  • Red Hat Red Hat OpenShift Container Platform 4.21 1790142788
  • Red Hat Red Hat OpenShift Container Platform 4.22 1790130905

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-75886 updated cvss 7.2

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

  • Red Hat OpenShift Container Platform 4.17 openshift4/ose-console-rhel9 1789939565
    fixed: vendor fix RHSA-2026:70587
  • Red Hat OpenShift Container Platform 4.18 openshift4/ose-console-rhel9 1789904865
    fixed: vendor fix RHSA-2026:70617
  • Red Hat OpenShift Container Platform 4.19 openshift4/ose-console-rhel9 1790095950
    fixed: vendor fix RHSA-2026:71447
  • Red Hat OpenShift Container Platform 4.20 openshift4/ose-console-rhel9 1790112153
    fixed: vendor fix RHSA-2026:71450
  • Red Hat OpenShift Container Platform 4.21 openshift4/ose-console-rhel9 1790142788
    fixed: vendor fix RHSA-2026:71453
  • Red Hat OpenShift Container Platform 4.22 openshift4/ose-console-rhel9 1790130905
    fixed: vendor fix RHSA-2026:71454
  • Red Hat OpenShift Container Platform 4 openshift4/ose-console Red Hat OpenShift Container Platform 4.17 openshift4/frr-rhel9 1789938330, openshift4/ose-cli-rhel9 1789937904, openshift4/ose-pod-rhel9 1789937463, openshift4/ose-etcd-rhel9 1789937632, openshift4/ose-tests-rhel9 1790075131, openshift4/ose-tools-rhel9 1790073665, +180 more Red Hat OpenShift Container Platform 4.18 openshift4/frr-rhel9 1789904437, openshift4/ose-cli-rhel9 1789904386, openshift4/ose-pod-rhel9 1789906731, openshift4/ose-etcd-rhel9 1789906675, openshift4/ose-tests-rhel9 1790074104, openshift4/ose-tools-rhel9 1790072642, +180 more Red Hat OpenShift Container Platform 4.19 openshift4/frr-rhel9 1789884391, openshift4/ose-cli-rhel9 1789896930, openshift4/ose-pod-rhel9 1789885260, openshift4/ose-etcd-rhel9 1789885218, openshift4/ose-tests-rhel9 1790074494, openshift4/ose-tools-rhel9 1790073159, +180 more Red Hat OpenShift Container Platform 4.20 openshift4/frr-rhel9 1789887670, openshift4/ose-cli-rhel9 1789886242, openshift4/ose-pod-rhel9 1789888943, openshift4/ose-etcd-rhel9 1789900219, openshift4/ose-tests-rhel9 1789920053, openshift4/ose-tools-rhel9 1789883496, +182 more Red Hat OpenShift Container Platform 4.21 openshift4/frr-rhel9 1789885447, openshift4/ose-cli-rhel9 1789885025, openshift4/ose-pod-rhel9 1789886631, openshift4/ose-etcd-rhel9 1789893973, openshift4/ose-tests-rhel9 1790134295, openshift4/ose-tools-rhel9 1790132809, +181 more
    +1 more products
    Red Hat OpenShift Container Platform 4.22 openshift4/frr-rhel9 1790100943, openshift4/ose-cli-rhel9 1789994211, openshift4/ose-pod-rhel9 1790056647, openshift4/ose-etcd-rhel9 1790025313, openshift4/ose-tests-rhel9 1790010536, openshift4/ose-tools-rhel9 1789995349, +182 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
45 d ago

Exploit prediction

0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Affected products

  • Red Hat Red Hat OpenShift Container Platform 4.17
  • Red Hat Red Hat OpenShift Container Platform 4.18
  • Red Hat Red Hat OpenShift Container Platform 4.19
  • Red Hat Red Hat OpenShift Container Platform 4.20
  • Red Hat Red Hat OpenShift Container Platform 4.21
  • Red Hat Red Hat OpenShift Container Platform 4.22
  • Red Hat Red Hat OpenShift Container Platform 4

Classification

Weakness
  • CWE-441 Unintended Proxy or Intermediary

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.