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OpenAdvisories
High · 7.5 CVE-2026-48042 EUVD-2026-39819

Envoy: Stack overflow in destructor of highly nested JSON

Published Jun 26, 2026 · Updated Jun 29, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
envoyproxy envoy >= 1.38.0, < 1.38.1, >= 1.37.0, < 1.37.3, >= 1.36.0, < 1.36.7, < 1.35.11 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
openSUSE Tumbleweed istioctl 1.30.2-1.1 openSUSE-SU-2026:11141-1

Advisories 2

References