VictoriaMetrics up to 1.146.0 VMAuth Authentication Endpoint app/vmauth/main.go requestHandler excessive authentication

CVSS Meta Temp Score
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CTI Interest Score
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3.4$0-$5k1.90

Summaryinfo

A vulnerability was found in VictoriaMetrics up to 1.146.0. It has been declared as problematic. The affected element is the function requestHandler of the file app/vmauth/main.go of the component VMAuth Authentication Endpoint. Executing a manipulation can lead to excessive authentication. This vulnerability appears as CVE-2026-19898. The attack may be performed from remote. In addition, an exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in VictoriaMetrics up to 1.146.0. This vulnerability affects the function requestHandler of the file app/vmauth/main.go of the component VMAuth Authentication Endpoint. The manipulation with an unknown input leads to a excessive authentication vulnerability. The CWE definition for the vulnerability is CWE-307. The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame, making it more susceptible to brute force attacks. As an impact it is known to affect confidentiality.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-19898. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1110.001.

It is possible to download the exploit at github.com. It is declared as proof-of-concept.

Upgrading to version 1.147.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 119ba0fb5be8024d50c5ba946599b2e69e8803ea is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.7
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Excessive authentication
CWE: CWE-307 / CWE-799 / CWE-400
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: VictoriaMetrics 1.147.0
Patch: 119ba0fb5be8024d50c5ba946599b2e69e8803ea

Timelineinfo

08/14/2026 Advisory disclosed
08/14/2026 +0 days VulDB entry created
08/14/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 11180
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2026-19898 (🔒)
GCVE (CVE): GCVE-0-2026-19898
GCVE (VulDB): GCVE-100-390088
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/14/2026 21:07
Changes: 08/14/2026 21:07 (63)
Complete: 🔍
Submitter: ZAST.AI
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #870679: VictoriaMetrics <=1.146.0 Improper Restriction of Excessive Authentication Attempts (by ZAST.AI)

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