BaseFortify

Publication date: 2025-11-25

Last updated on: 2025-11-25

Assigner: GitHub, Inc.

Description

VictoriaMetrics is a scalable solution for monitoring and managing time series data. In versions from 1.0.0 to before 1.110.23, from 1.111.0 to before 1.122.8, and from 1.123.0 to before 1.129.1, affected versions are vulnerable to DoS attacks because the snappy decoder ignored VictoriaMetrics request size limits allowing malformed blocks to trigger excessive memory use. This could lead to OOM errors and service instability. The fix enforces block-size checks based on MaxRequest limits. This issue has been patched in versions 1.110.23, 1.122.8, and 1.129.1.

CVSS Scores

EPSS Scores

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Meta Information

Published

2025-11-25

Last Modified

2025-11-25

Generated

2026-07-06

AI Q&A

2025-11-26

EPSS Evaluated

2026-07-05

NVD

CVE-2025-65942

Affected Vendors & Products

Vendor	Product	Version / Range
victoriametrics	victoriametrics	1.122.8
victoriametrics	victoriametrics	1.110.23
victoriametrics	victoriametrics	1.0.0
victoriametrics	victoriametrics	1.129.1

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-770	The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

Attack-Flow Graph

Executive Summary

This vulnerability in VictoriaMetrics occurs because the snappy decoder does not enforce request size limits, allowing malformed data blocks to cause excessive memory usage. This can lead to out-of-memory (OOM) errors and instability in the service. The issue affects certain versions before specific patches and has been fixed by enforcing block-size checks based on maximum request limits.

Impact Analysis

The vulnerability can cause denial of service (DoS) by triggering excessive memory consumption, leading to out-of-memory errors and service instability. This can disrupt monitoring and management of time series data, potentially impacting system availability.

Mitigation Strategies

Upgrade VictoriaMetrics to a patched version: 1.110.23, 1.122.8, or 1.129.1 or later. These versions include fixes that enforce block-size checks based on MaxRequest limits to prevent excessive memory use and DoS attacks.

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