Vulnerability · CVE-2026-46579
A flaw was found in the OpenShift Router.
Published May 29, 2026 · corrected/updated Sep 10, 2026 · redhat openshift container platform · evidence confidence medium
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.
Grounded briefings
Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.
Executive
CVE-2026-46579 is a high public vulnerability record for redhat openshift container platform. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.
System administrator
Identify whether redhat openshift container platform is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: redhat/openshift container platform (4.0); redhat/openshift router. Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.
Security analyst
Signals on file: CVSS 7.5. It is not currently listed in the CISA Known Exploited catalog. Weakness classes: CWE-287. Sources contributing to this record: cve_org, nvd. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.
Exploitation and remediation
Exploitation evidence
Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.
Patch and remediation
No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.
Safe detection guidance
Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.
Technology hubs
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.
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
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
Affected
- cpe redhat/openshift container platform4.0
- cpe redhat/openshift routerversion unspecified
Sources
- CVE.orgVulnerability recordCVE-2026-46579
Official CVE identifier
cve.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