CVE-2026-19898: Improper Restriction of Excessive Authentication Attempts in VictoriaMetrics
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.
AI Analysis
Technical Summary
This vulnerability affects the requestHandler function in the app/vmauth/main.go file of VictoriaMetrics' VMAuth Authentication Endpoint. It results in improper restriction of excessive authentication attempts, which could allow an attacker to perform multiple authentication attempts remotely. The vulnerability is identified as CWE-307 (Improper Restriction of Excessive Authentication Attempts) and CWE-799 (Improper Control of Interaction Frequency). The attack complexity is high, and no privileges or user interaction are required. A public exploit has been published. The issue is fixed in VictoriaMetrics version 1.147.0 with patch 119ba0fb5be8024d50c5ba946599b2e69e8803ea.
Potential Impact
The vulnerability allows remote attackers to bypass proper rate limiting on authentication attempts, potentially facilitating brute force or credential stuffing attacks. However, the complexity of exploitation is high and no known active exploitation in the wild has been reported. The impact is rated medium with a CVSS score of 6.3.
Mitigation Recommendations
Upgrade VictoriaMetrics to version 1.147.0 or later, which contains the official fix for this vulnerability. No other mitigations are specified. Since this is not a cloud service, remediation depends on applying the vendor patch.
CVE-2026-19898: Improper Restriction of Excessive Authentication Attempts in VictoriaMetrics
Description
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.
CVSS v4.0
Score 6.3medium
Affected software
pkg:github/victoriametrics/VictoriaMetricsRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects the requestHandler function in the app/vmauth/main.go file of VictoriaMetrics' VMAuth Authentication Endpoint. It results in improper restriction of excessive authentication attempts, which could allow an attacker to perform multiple authentication attempts remotely. The vulnerability is identified as CWE-307 (Improper Restriction of Excessive Authentication Attempts) and CWE-799 (Improper Control of Interaction Frequency). The attack complexity is high, and no privileges or user interaction are required. A public exploit has been published. The issue is fixed in VictoriaMetrics version 1.147.0 with patch 119ba0fb5be8024d50c5ba946599b2e69e8803ea.
Potential Impact
The vulnerability allows remote attackers to bypass proper rate limiting on authentication attempts, potentially facilitating brute force or credential stuffing attacks. However, the complexity of exploitation is high and no known active exploitation in the wild has been reported. The impact is rated medium with a CVSS score of 6.3.
Mitigation Recommendations
Upgrade VictoriaMetrics to version 1.147.0 or later, which contains the official fix for this vulnerability. No other mitigations are specified. Since this is not a cloud service, remediation depends on applying the vendor patch.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-wmqf-q66j-3h4j
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-19898"]
- Ecosystems
- []
- Database Specific Severity
- LOW
- Cvss Version
- 3.1
Threat ID: 6a81d70abf8831d5394a1976
Added to database: 08/16/2026, 15:28:10 UTC
Last enriched: 08/24/2026, 11:18:01 UTC
Last updated: 09/05/2026, 10:52:07 UTC
Views: 54
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