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CVE-2026-47207

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, Envoy crashes if an ext_proc server sends a single gRPC message containing multiple, specially crafted ProcessingResponse messages. This can occur when the first response in the batch causes the gRPC stream object to be destroyed, leading to a use-after-free error when Envoy attempts to process subsequent responses in the same gRPC message. This vulnerabil
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e764ffd8a01278f9e1812ed95c0cff23bb8a2593d0631755e708d6056192d65f
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_v5affected
    urn:baitaphish:normalized-source-record:v2:9bec4891ec4185bcd1cfb3ef512a602db56cd927e3047c529c7089d44f69fedd · sha256:56c71d91ba2fe9d2… · /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:v2:9bec4891ec4185bcd1cfb3ef512a602db56cd927e3047c529c7089d44f69fedd · sha256:56c71d91ba2fe9d2… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-416","description":"CWE-416: Use After Free","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:9bec4891ec4185bcd1cfb3ef512a602db56cd927e3047c529c7089d44f69fedd · sha256:56c71d91ba2fe9d2… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"tags":["exploit"],"url":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-68cv-hq5f-g6xv"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9bec4891ec4185bcd1cfb3ef512a602db56cd927e3047c529c7089d44f69fedd · sha256:56c71d91ba2fe9d2… · /containers/adp/0/references/0
{"name":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-68cv-hq5f-g6xv","tags":["x_refsource_CONFIRM"],"url":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-68cv-hq5f-g6xv"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9bec4891ec4185bcd1cfb3ef512a602db56cd927e3047c529c7089d44f69fedd · sha256:56c71d91ba2fe9d2… · /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.

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