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TI-2025-40513 Aliases CVE-2025-65942GHSA-66jq-2c23-2xh5

VictoriaMetrics Snappy Decoder DoS Vulnerability is Causing OOM

Priority LOW 14CWE-770Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-770.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00366 30th percentileScored 2026-11-07
Fix Fixed VictoriaMetrics (VictoriaMetrics): 1.110.23, 1.122.8, 1.129.1github.com/VictoriaMetrics/VictoriaMetrics (Go): 1.129.1, 1.122.8, 1.110.23

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
VictoriaMetricsVictoriaMetrics1.0.0 to before 1.110.23; 1.111.0 to before 1.122.8; 1.123.0 to before 1.129.11.110.23, 1.122.8, 1.129.1Patch availableCNA
—github.com/VictoriaMetrics/VictoriaMetrics (Go)1.123.0 to before 1.129.11.129.1Patch availableGHSA-66jq-2c23-2xh5
—github.com/VictoriaMetrics/VictoriaMetrics (Go)1.111.0 to before 1.122.81.122.8Patch availableGHSA-66jq-2c23-2xh5
—github.com/VictoriaMetrics/VictoriaMetrics (Go)1.0.0 to before 1.110.231.110.23Patch availableGHSA-66jq-2c23-2xh5
  • VictoriaMetrics VendorVictoriaMetrics Affected 1.0.0 to before 1.110.23; 1.111.0 to before 1.122.8; 1.123.0 to before 1.129.1 Fixed in 1.110.23, 1.122.8, 1.129.1 Patch available CNA
  • github.com/VictoriaMetrics/VictoriaMetrics (Go) Vendor— Affected 1.123.0 to before 1.129.1 Fixed in 1.129.1 Patch available GHSA-66jq-2c23-2xh5
  • github.com/VictoriaMetrics/VictoriaMetrics (Go) Vendor— Affected 1.111.0 to before 1.122.8 Fixed in 1.122.8 Patch available GHSA-66jq-2c23-2xh5
  • github.com/VictoriaMetrics/VictoriaMetrics (Go) Vendor— Affected 1.0.0 to before 1.110.23 Fixed in 1.110.23 Patch available GHSA-66jq-2c23-2xh5

Remediation

  • Fix · CNA VictoriaMetrics (VictoriaMetrics) Fixed in 1.110.23, 1.122.8, 1.129.1
  • Fix · GHSA-66jq-2c23-2xh5 github.com/VictoriaMetrics/VictoriaMetrics (Go) Fixed in 1.129.1 Advisory →
  • Fix · GHSA-66jq-2c23-2xh5 github.com/VictoriaMetrics/VictoriaMetrics (Go) Fixed in 1.122.8 Advisory →
  • Fix · GHSA-66jq-2c23-2xh5 github.com/VictoriaMetrics/VictoriaMetrics (Go) Fixed in 1.110.23 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-65942
  2. 2026-10-03 Alias added: GHSA-66jq-2c23-2xh5

References

Advisory 1

Other 6

  • TI-2026-44136 VictoriaMetrics vmrestore: path traversal via crafted backup part names escapes restore root CVSS 3.1MEDIUM 6.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences