CVEvulnerability

CVE-2026-48044

7.5 HIGH Published 2026-06-26 Modified 2026-10-25 Official page ↗
Status
Analyzed
Published
2026-06-26
Last modified
2026-10-25
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-409

Description

Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.23.0 until 1.35.11, 1.36.7, 1.37.3, and 1.38.1, a vulnerability has been identified in Envoy's zstd decompressor implementation (ZstdDecompressorImpl). When zstd decompression is enabled, processing a specially crafted, highly compressed zstd payload can lead to massive memory allocation. An attacker can exploit this to cause severe memory exhaustion, potentially resulting in an Out-Of-Memory (OOM) kill and Denial of Service (DoS) for the Envoy proxy. This vulnerability is fixed in 1.35.11, 1.36.7, 1.37.3, and 1.38.1.

Affected configurations

• envoyproxy envoy (>= 1.23.0 < 1.35.13) • envoyproxy envoy (>= 1.36.0 < 1.36.9) • envoyproxy envoy (>= 1.37.0 < 1.37.5) • envoyproxy envoy (>= 1.38.0 < 1.38.3)

Related

Weakness · CWE (1)

  • CWE-409 Improper Handling of Highly Compressed Data (Data Amplification) weakness

References