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Vulnerabilities

Vulnerability · CVE-2026-46579

A flaw was found in the OpenShift Router.

Published May 29, 2026 · catalog updated Sep 10, 2026 · openshift container platform

Check if you run it

No confirmed exploitation is on record for CVE-2026-46579. EPSS is 0.62%. Act only if a listed version of openshift container platform is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.62%
Remediation
Not established
Affected products
cpe redhat/openshift container platform · cpe redhat/openshift router

A flaw was found in the OpenShift Router. When a Route has set to Allow, the HTTP frontend does not remove headers from incoming requests. This allows an unauthenticated attacker to send plain HTTP requests with crafted headers. As a result, backends relying on these headers for mutual TLS (Transport Layer Security) authentication can be bypassed, enabling the attacker to impersonate client certificate identities.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe redhat/openshift container platform4.0
  • cpe redhat/openshift routerversion unspecified

How to fix CVE-2026-46579

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-46579. EPSS is 0.62%. Act only if a listed version of openshift container platform is installed.

Which versions are affected?

Compare what you have installed with redhat/openshift container platform 4.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-287: Improper Authentication. EPSS 0.62%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Kubernetes security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 29, 2026 · NIST NVD

    Detected

    A flaw was found in the OpenShift Router. When a Route has set to Allow, the HTTP frontend does not remove headers from incoming requests. This allows an unauthenticated attacker to send plain HTTP requests with crafted headers. As a result, backends relying on these headers for mutual TLS (Transport Layer Security) authentication can be bypassed, enabling the attacker to impersonate client certif

  2. Sep 10, 2026 · NIST NVD

    Updated

    A flaw was found in the OpenShift Router. When a Route has set to Allow, the HTTP frontend does not remove headers from incoming requests. This allows an unauthenticated attacker to send plain HTTP requests with crafted headers. As a result, backends relying on these headers for mutual TLS (Transport Layer Security) authentication can be bypassed, enabling the attacker to impersonate client certif

Sources

  • CVE.orgVulnerability recordCVE-2026-46579

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-46579

    30-day exploitation probability 0.6%

    first.org
  • NIST NVDVulnerability recordCVE-2026-46579

    A flaw was found in the OpenShift Router. When a Route has set to Allow, the HTTP frontend does not remove headers from incoming requests. This allows an unauthenticated attacker to send plain HTTP requests with crafted `X-SSL-Clie

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.