CVE Explorer
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 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.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"envoy","vendor":"envoyproxy","versions":[{"status":"affected","version":">= 1.38.0, < 1.38.3"},{"status":"affected","version":">= 1.37.0, < 1.37.5"},{"status":"affected","version":">= 1.36.0, < 1.36.9"},{"status":"affected","version":">= 1.34.0, < 1.35.13"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:e7e59db835f860fe4d0b96e7ad04ea0e3e367375f4fd5412a6d06f0d3e157ec7 · sha256:7be4ca5ee7047099… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"ADJACENT_NETWORK","availabilityImpact":"LOW","baseScore":4.8,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"HIGH","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:e7e59db835f860fe4d0b96e7ad04ea0e3e367375f4fd5412a6d06f0d3e157ec7 · sha256:7be4ca5ee7047099… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-130","description":"CWE-130: Improper Handling of Length Parameter Inconsistency","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:e7e59db835f860fe4d0b96e7ad04ea0e3e367375f4fd5412a6d06f0d3e157ec7 · sha256:7be4ca5ee7047099… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"name":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-wh36-hm39-mm3r","tags":["x_refsource_CONFIRM"],"url":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-wh36-hm39-mm3r"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:e7e59db835f860fe4d0b96e7ad04ea0e3e367375f4fd5412a6d06f0d3e157ec7 · sha256:7be4ca5ee7047099… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.