CVE-2026-42965

Medium

Elevated severity or exploit probability.

CVSS base

7.7 HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

EPSS — probability of exploitation (30 days)

0.3%

18.5th percentile

CISA KEV

Not listed

Weakness / dates

CWE-918

Published 2026-05-29 · modified 2026-09-10

CVSS breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Attack Vector	N	Network
Attack Complexity	L	Low
Privileges Required	L	Low
User Interaction	N	None
Scope	C	Changed
Confidentiality	H	High
Integrity	N	None
Availability	N	None

Timeline

2026-05-29 — Published (NVD)
2026-09-10 — Last modified (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.

Affected

redhat

References

Official: NVD · CVE.org