CVE-2024-23322: Envoyproxy Envoy

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

Envoy is a high-performance edge/middle/service proxy. Envoy will crash when certain timeouts happen within the same interval. The crash occurs when the following are true: 1. hedge_on_per_try_timeout is enabled, 2. per_try_idle_timeout is enabled (it can only be done in configuration), 3. per-try-timeout is enabled, either through headers or configuration and its value is equal, or within the backoff interval of the per_try_idle_timeout. This issue has been addressed in released 1.29.1, 1.28.1, 1.27.3, and 1.26.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Affected products

• Envoyproxy Envoy: from 1.26.0, before 1.26.7 (fixed in 1.26.7); from 1.27.0, before 1.27.3 (fixed in 1.27.3); from 1.28.0, before 1.28.1 (fixed in 1.28.1); from 1.29.0, before 1.29.1 (fixed in 1.29.1)

Published 2024-02-09. Last modified 2026-06-17.