GitHub Advisoryadvisory · Go
GHSA-66jq-2c23-2xh5 VictoriaMetrics' Snappy Decoder DoS Vulnerability is Causing OOM
LOW
Official page ↗
- Aliases
- CVE-2025-65942
- Ecosystem
- Go
- Packages
- github.com/VictoriaMetrics/VictoriaMetrics
- Severity
- Low
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L
- Weaknesses
- CWE-770
- Reviewed
- 2025-11-25
Affected packages
• Go github.com/VictoriaMetrics/VictoriaMetrics: >= 1.123.0, < 1.129.1 → fixed in 1.129.1
• Go github.com/VictoriaMetrics/VictoriaMetrics: >= 1.111.0, < 1.122.8 → fixed in 1.122.8
• Go github.com/VictoriaMetrics/VictoriaMetrics: >= 1.0.0, < 1.110.23 → fixed in 1.110.23
Description
Impact
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.
Patches
Versions 1.129.1, 1.122.8, 1.110.23
Resources
• https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.129.1
• https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.122.8
• https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.110.23
Note
VictoriaMetrics' security model assumes its APIs are properly secured (e.g. via access control flags or a firewall); this advisory addresses malicious input that should not be possible under a correctly secured deployment.
Related
Alias · CVE (1)
- CVE-2025-65942 VictoriaMetrics is a scalable solution for monitoring and managing time series data. vulnerability
Weakness · CWE (1)
- CWE-770 Allocation of Resources Without Limits or Throttling weakness
References
- https://github.com/VictoriaMetrics/VictoriaMetrics/security/advisories/GHSA-66jq-2c23-2xh5 web
- https://nvd.nist.gov/vuln/detail/CVE-2025-65942 advisory
- https://github.com/VictoriaMetrics/VictoriaMetrics/commit/51b44afd34d2c9a392d4ebedeeb5b4a7f5beca24 web
- https://github.com/VictoriaMetrics/VictoriaMetrics package
- https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.110.23 web
- https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.122.8 web
- https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.129.1 web