Unrated severityNVD Advisory· Published Apr 4, 2023· Updated Feb 11, 2025
Envoy forwards invalid Http2/Http3 downstream headers
CVE-2023-27491
Description
Envoy is an open source edge and service proxy designed for cloud-native applications. Compliant HTTP/1 service should reject malformed request lines. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, There is a possibility that non compliant HTTP/1 service may allow malformed requests, potentially leading to a bypass of security policies. This issue is fixed in versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9.
Affected products
1- Range: >= 1.25.0, < 1.25.3
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
4- datatracker.ietf.org/doc/html/rfc9113mitrex_refsource_MISC
- datatracker.ietf.org/doc/html/rfc9114mitrex_refsource_MISC
- github.com/envoyproxy/envoy/security/advisories/GHSA-5jmv-cw9p-f9rpmitrex_refsource_CONFIRM
- www.rfc-editor.org/rfc/rfc9110mitrex_refsource_MISC
News mentions
0No linked articles in our index yet.