Vulnerability in Red Hat Openshift Container Platform 4
CVE-2026-75886
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (26.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-75886 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
- access.redhat.com/errata/RHSA-2026:71450 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:71453 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:71454 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:71447 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:70587 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:70617 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-75886?
- CVE-2026-75886 is a high-severity vulnerability in Red Hat Openshift Container Platform 4, classified under Unintended Proxy or Intermediary (Confused Deputy). CVSS score: 7.2/10. Published 2026-09-23.
- How severe is CVE-2026-75886?
- High severity. CVSS v3 base score is 7.2 out of 10.