Medium severity4.8NVD Advisory· Published Apr 4, 2023· Updated Jun 17, 2026
CVE-2023-27492
CVE-2023-27492
Description
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, the Lua filter is vulnerable to denial of service. Attackers can send large request bodies for routes that have Lua filter enabled and trigger crashes.
As of versions versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, Envoy no longer invokes the Lua coroutine if the filter has been reset. As a workaround for those whose Lua filter is buffering all requests/ responses, mitigate by using the buffer filter to avoid triggering the local reply in the Lua filter.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
4>= 1.25.0, < 1.25.3+ 1 more
- (no CPE)range: >= 1.25.0, < 1.25.3
- cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*range: <1.22.9
Patches
Vulnerability mechanics
References
1- github.com/envoyproxy/envoy/security/advisories/GHSA-wpc2-2jp6-ppg2nvdExploitVendor Advisory
News mentions
0No linked articles in our index yet.