CVEvulnerability
CVE-2024-23326
8.2 HIGH
Official page ↗
- Status
- Modified
- Published
- 2024-06-04
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.9 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- CVSS 3.1 ([email protected])
- 8.2 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
- Weaknesses
- CWE-391, CWE-444
Description
Envoy is a cloud-native, open source edge and service proxy. A theoretical request smuggling vulnerability exists through Envoy if a server can be tricked into adding an upgrade header into a response. Per RFC https://www.rfc-editor.org/rfc/rfc7230#section-6.7 a server sends 101 when switching protocols. Envoy incorrectly accepts a 200 response from a server when requesting a protocol upgrade, but 200 does not indicate protocol switch. This opens up the possibility of request smuggling through Envoy if the server can be tricked into adding the upgrade header to the response.
Affected configurations
• envoyproxy envoy (< 1.27.6)
• envoyproxy envoy (>= 1.28.0 < 1.28.4)
• envoyproxy envoy (>= 1.29.0 < 1.29.5)
• envoyproxy envoy (>= 1.30.0 < 1.30.2)
Related
Weakness · not in database (1)
Weakness · CWE (1)
- CWE-444 Inconsistent Interpretation of HTTP Requests weakness