CVE-2025-2586: Ols: unauthenticated metrics flooding in openshift lightspeed service leading to resource exhaustion

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-03-31 · updated 2026-10-15
Weakness: CWE-400

Description

A flaw was found in the OpenShift Lightspeed Service, which is vulnerable to unauthenticated API request flooding. Repeated queries to non-existent endpoints inflate metrics storage and processing, consuming excessive resources. This issue can lead to monitoring system degradation, increased disk usage, and potential service unavailability. Since the issue does not require authentication, an external attacker can exhaust CPU, RAM, and disk space, impacting both application and cluster stability.

References

https://access.redhat.com/security/cve/CVE-2025-2586
https://bugzilla.redhat.com/show_bug.cgi?id=2353998
https://github.com/openshift/lightspeed-service/pull/2369

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