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CVE-2026-42965Disclosure(redhat / openshift_container_platform)

LOWCVSS 6.5 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch redhat openshift_container_platform systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

A flaw was found in the OpenShift Router. A user with EndpointSlice write access can exploit this vulnerability by creating a Service backed by an FQDN (Fully Qualified Domain Name) EndpointSlice that resolves to a cloud metadata endpoint. This allows the router to proxy requests to the cloud metadata endpoint, leading to the disclosure of instance credentials and other sensitive metadata. This bypasses previous security measures for validating IP addresses.

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0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-918

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • openshift_container_platform
  • openshift_router

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 2 signals
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-05-29); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
redhat
Products
openshift_container_platformopenshift_router

2 versions affected across 2 products

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-05-29: 1Mentions · 2026-09-12: 1Patch / Workaround · 2026-09-12: 1Technical Details · 2026-05-29: 1Technical Details · 2026-09-12: 105-2909-12
Signal classification2 categories
Disclosure
150.0%
Patch
150.0%
Referenced assets1 URL
By indicator
Classification over time
DateTotalLabels
2026-05-291
Disclosure1
2026-09-121
Patch1
Full discourse2 posts
  • DFIR Lab@DFIR_Lab
    Patch

    🚨 HIGH severity CVE-2026-42965 (CVSS 7.7) affects OpenShift Router. Attackers with EndpointSlice write access can proxy requests to cloud metadata endpoints, exposing instance credentials. Patch immediately. #CVE #Vulnerability #PatchNow #ThreatIntel https://t.co/HShajL7PUF

    Post summary

    The tweet details the high‑severity CVE‑2026‑42965 affecting OpenShift Router and urges immediate patching to mitigate credential exposure via cloud metadata endpoints.

    0000034
    133 followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-42965 OpenShift Router Metadata Endpoint Exposure via FQDN EndpointSlice https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-42965

    Post summary

    The text is a brief disclosure indicating a metadata endpoint exposure vulnerability in OpenShift Router via FQDN EndpointSlice, with no evidence of PoC, exploit, or mitigation.

    0000047
    4.0K followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
Appredhatopenshift_container_platform4.0--
Appredhatopenshift_router---

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