CVE-2026-48044

published 2026-06-26

CVE-2026-48044: 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…

Priority P3 42 high 7.5 CVSS 3.1

AV N AC L PR N UI N S U C N I N A H

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

8 ranges

Vendor	Product	Version range	Fixed in
envoyproxy	envoy	—	—
envoyproxy	envoy	—	—
envoyproxy	envoy	—	—
envoyproxy	envoy	—	—
envoyproxy	envoy	>= 1.23.0 < 1.35.13	1.35.13
envoyproxy	envoy	>= 1.36.0 < 1.36.9	1.36.9
envoyproxy	envoy	>= 1.37.0 < 1.37.5	1.37.5
envoyproxy	envoy	>= 1.38.0 < 1.38.3	1.38.3

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CWE-409