What is CVE-2026-47774?

CVE-2026-47774 is a high-severity vulnerability in Envoyproxy Envoy, classified under Asymmetric Resource Consumption (Amplification). CVSS score: 7.5/10. Published 2026-06-17.

How severe is CVE-2026-47774?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Envoyproxy Envoy

CVE-2026-47774

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.35.11, 1.36.7, 1.37.3, and 1.38.1, a vulnerability in Envoy's HTTP/2 downstream request processing allows an unauthenticated remote…

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Envoyproxy Envoy — versions < 1.35.11, >= 1.36.0, < 1.36.7, >= 1.37.0, < 1.37.3

Weakness classification (CWE)

CWE-405 — Asymmetric Resource Consumption (Amplification)
CWE-770 — Allocation of Resources Without Limits or Throttling

References

security-advisories@github.com (x_refsource_CONFIRM)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2026-47774?: CVE-2026-47774 is a high-severity vulnerability in Envoyproxy Envoy, classified under Asymmetric Resource Consumption (Amplification). CVSS score: 7.5/10. Published 2026-06-17.
How severe is CVE-2026-47774?: High severity. CVSS v3 base score is 7.5 out of 10.