CVE-2026-19898: VictoriaMetrics VMAuth Authentication Endpoint main.go requestHandler excessive authentication
A vulnerability was found in VictoriaMetrics up to 1.146.0. Impacted is the function requestHandler of the file app/vmauth/main.go of the component VMAuth Authentication Endpoint. Performing a manipulation results in improper restriction of excessive authentication attempts. The attack is possible to be carried out remotely. The complexity of an attack is rather high. The exploitability is considered difficult. The exploit has been made public and could be used. Upgrading to version 1.147.0 is recommended to address this issue. The patch is named 119ba0fb5be8024d50c5ba946599b2e69e8803ea. Upgrading the affected component is recommended.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
VictoriaMetrics VMAuth Authentication Endpointto a version that resolves this vulnerability.Fixed in 1.147.0Patch 119ba0fb5be8024d50c5ba946599b2e69e8803ea
Event History
Frequently Asked Questions
What is the severity of CVE-2026-19898?
The severity of CVE-2026-19898 is rated low with a score of 3.7.
How do I fix CVE-2026-19898?
To mitigate CVE-2026-19898, users should upgrade to the latest version of VictoriaMetrics beyond 1.146.0.
What component is affected by CVE-2026-19898?
CVE-2026-19898 affects the VMAuth Authentication Endpoint component of VictoriaMetrics.
What does CVE-2026-19898 involve?
CVE-2026-19898 involves excessive authentication attempts due to improper restrictions in the requestHandler function.
What versions of VictoriaMetrics are vulnerable to CVE-2026-19898?
VictoriaMetrics versions up to and including 1.146.0 are vulnerable to CVE-2026-19898.