CVE-2024-34363: Envoyproxy Envoy

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

Envoy is a cloud-native, open source edge and service proxy. Due to how Envoy invoked the nlohmann JSON library, the library could throw an uncaught exception from downstream data if incomplete UTF-8 strings were serialized. The uncaught exception would cause Envoy to crash.

Affected products

• Envoyproxy Envoy: from 1.28.0, before 1.28.4 (fixed in 1.28.4); from 1.29.0, before 1.29.5 (fixed in 1.29.5); from 1.30.0, before 1.30.2 (fixed in 1.30.2)

Published 2024-06-04. Last modified 2026-06-17.