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CVE-2026-47204

Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.26.0 until 1.35.13, 1.36.9, 1.37.5, and 1.38.3, the envoy.filters.http.grpc_stats filter crashes (null pointer dereference / segfault) when a Connect protocol request (Content-Type: application/connect+proto or application/connect+json) hits a direct_response route. A single unauthenticated HTTP request crashes the Envoy process. This vulnerability is fixed in 1.35.13, 1.36.9, 1.37.5, and 1.38.3.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ded5bce5f0ccef16a13e59f088310dbaf605bcff948bbff6830d9a44a6722503
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":">= 1.26.0, < 1.35.13"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b18eca6c01bf37b50c5f315385a33aa03f69d1ff9a88837eb9dc7812ba0a9a4a · sha256:e79113cdb83d0e0d… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:b18eca6c01bf37b50c5f315385a33aa03f69d1ff9a88837eb9dc7812ba0a9a4a · sha256:e79113cdb83d0e0d… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-476","description":"CWE-476: NULL Pointer Dereference","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b18eca6c01bf37b50c5f315385a33aa03f69d1ff9a88837eb9dc7812ba0a9a4a · sha256:e79113cdb83d0e0d… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-3jxh-8p6x-7pf6","tags":["x_refsource_CONFIRM"],"url":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-3jxh-8p6x-7pf6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b18eca6c01bf37b50c5f315385a33aa03f69d1ff9a88837eb9dc7812ba0a9a4a · sha256:e79113cdb83d0e0d… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-3jxh-8p6x-7pf6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b18eca6c01bf37b50c5f315385a33aa03f69d1ff9a88837eb9dc7812ba0a9a4a · sha256:e79113cdb83d0e0d… · /containers/adp/0/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.

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