CVE-2026-48042

Envoy: Stack overflow in destructor of highly nested JSON

State: Published
Severity: 7.5 High
Published: Jun 26, 2026
Updated: Jun 29, 2026
Reserved: May 20, 2026

Description

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.35.11, 1.36.7, 1.37.3, and 1.38.1, destructor of JSON Object results in stack overflow when deeply O(100K) nested objects are present. This vulnerability is fixed in 1.35.11, 1.36.7, 1.37.3, and 1.38.1.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	GitHub_M

Weaknesses

CWE-1124 Excessively Deep Nesting

Affected Products

Product	Versions
envoyenvoyproxy	>= 1.38.0, < 1.38.1Affected >= 1.37.0, < 1.37.3Affected >= 1.36.0, < 1.36.7Affected < 1.35.11Affected

References

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