Brute Force Affecting github.com/victoriametrics/victoriametrics/app/vmauth package, versions <1.147.0
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMVICTORIAMETRICSVICTORIAMETRICSAPPVMAUTH-18856122
- published16 Aug 2026
- disclosed15 Aug 2026
- creditZAST.AI
Introduced: 15 Aug 2026
NewCVE-2026-19898 Â (opens in a new tab)How to fix?
Upgrade github.com/VictoriaMetrics/VictoriaMetrics/app/vmauth to version 1.147.0 or higher.
Overview
Affected versions of this package are vulnerable to Brute Force via the requestHandler in app/vmauth/main.go. An attacker can brute-force authentication by sending large numbers of unauthorized requests because failed logins are returned immediately. This lets a remote attacker sustain high-rate auth guessing against the VMAuth authentication endpoint with minimal cost, increasing the chance of unauthorized access and leaving operators with only noisy invalid-auth-token errors to detect the attack.