Bug 2493675 (CVE-2026-47692) - CVE-2026-47692 envoy: Envoy: PROXY Protocol v2 header generator emits "skipped" TLVs, causing 65 KB attacker-controlled spillover into the upstream application stream
Summary: CVE-2026-47692 envoy: Envoy: PROXY Protocol v2 header generator emits "skippe...
Keywords:
Status: NEW
Alias: CVE-2026-47692
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-26 20:01 UTC by OSIDB Bzimport
Modified: 2026-07-02 17:25 UTC (History)
1 user (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-06-26 20:01:15 UTC 
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.
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