CVE-2026-48042 HIGH

CVE-2026-48042: Envoy: Stack overflow in destructor of highly nested JSON

Vendor Envoyproxy
Product envoy
Weakness CWE-1124
Published June 26, 2026
Last update June 29, 2026
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

June 26, 2026 CVE published
June 29, 2026 Record updated