CVE-2026-75886Network attack vector

Unauthenticated catalog disclosure via unguarded reverse proxy

Published Sep 23, 2026 · Updated Sep 23, 2026

Authentication bypass in Red Hat OpenShift Container Platform 4 allows remote attackers to access the in-cluster catalogd service. The console CatalogdHandler registers /api/catalogd/ without authentication and forwards requests, including the openshift-session-token cookie, to catalogd in the openshift-catalogd namespace. Network access to the console endpoint is sufficient to disclose the internal operator-catalog index and relay requests into that namespace.

CVSS severityUnavailable
Unscored
EPSS probability0.33%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Red Hat OpenShift Container Platform 4 allows remote attackers to access the in-cluster catalogd service. The console CatalogdHandler registers /api/catalogd/ without authentication and forwards requests, including the openshift-session-token cookie, to catalogd in the openshift-catalogd namespace. Network access to the console endpoint is sufficient to disclose the internal operator-catalog index and relay requests into that namespace.

The record

CVE
CVE-2026-75886
Published
Sep 23, 2026
Updated
Sep 23, 2026
Vendor
Commonhaus Foundation
Product
Red Hat OpenShift Container Platform 4
Classifications
T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Commonhaus Foundation · Red Hat OpenShift Container Platform 4Affected versions are unavailable in this record.

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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