CVE catalog
CVE-2026-47692
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 m
- Severity
- Medium · CVSS 4.8
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.22% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | envoy | Not reported | 1.35.13 | fixed |
| Cpe | envoy | Not reported | 1.36.9 | fixed |
| Cpe | envoy | Not reported | 1.37.5 | fixed |
| Cpe | envoy | Not reported | 1.38.3 | fixed |
| Cpe | envoy | Not reported | 1.38.3 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | envoy | cpe | Not reported | 1.35.13 | Not reported | Not reported | Not reported |
| Cpe | envoy | cpe | Not reported | 1.36.9 | Not reported | Not reported | Not reported |
| Cpe | envoy | cpe | Not reported | 1.37.5 | Not reported | Not reported | Not reported |
| Cpe | envoy | cpe | Not reported | 1.38.3 | Not reported | Not reported | Not reported |
| Cpe | envoy | cpe | Not reported | 1.38.3 | Not reported | NVD-CVE-2026-47692 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_11141-1.json]
- [https://github.com/envoyproxy/envoy/security/advisories/GHSA-wh36-hm39-mm3r]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-47692]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-47692.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2048.json]
[CERT-Bund public advisories] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]