CVEvulnerability

CVE-2026-47692

4.3 MEDIUM Published 2026-06-26 Modified 2026-10-25 Official page ↗
Status
Analyzed
Published
2026-06-26
Last modified
2026-10-25
Assigner
[email protected]
CVSS 3.1 ([email protected])
4.8 MEDIUM — CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:L
CVSS 3.1 ([email protected])
4.3 MEDIUM — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weaknesses
CWE-130

Description

Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.34.0 until 1.35.13, 1.36.9, 1.37.5, and 1.38.3, PROXY Protocol v2 header generator emits TLVs beyond the maximum length of 65535 bytes, causing a mismatch between bytes written and the length field in the header. This can result in smuggled bytes on the upstream request. This vulnerability is fixed in 1.35.13, 1.36.9, 1.37.5, and 1.38.3.

Affected configurations

• envoyproxy envoy (>= 1.34.0 < 1.35.13) • envoyproxy envoy (>= 1.36.0 < 1.36.9) • envoyproxy envoy (>= 1.37.0 < 1.37.5) • envoyproxy envoy (>= 1.38.0 < 1.38.3)

Related

Weakness · CWE (1)

  • CWE-130 Improper Handling of Length Parameter Inconsistency weakness

References