{"api_version":"1","generated_at":"2026-06-28T01:13:42+00:00","cve":"CVE-2026-48090","urls":{"html":"https://cve.report/CVE-2026-48090","api":"https://cve.report/api/cve/CVE-2026-48090.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-48090","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-48090"},"summary":{"title":"Envoy HTTP: OAuth2 filter late async token completion after stream teardown (UAF / crash risk)","description":"Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.37.0 until 1.37.5 and 1.38.3, the HTTP OAuth2 filter (envoy.filters.http.oauth2) can leave an in-flight async token exchange attached to a downstream stream that has already been torn down. A late AsyncClient completion can still invoke OAuth2Filter methods that use StreamDecoderFilterCallbacks after that object’s lifetime has ended, causing undefined behavior, worker crashes (availability loss), and use-after-free / invalid-vptr failures under AddressSanitizer. This is a memory-safety / lifetime issue in the data plane, not a trivial config bug. Remote code execution is not claimed here; the primary demonstrated impact is DoS via crash and UB; any further impact would be deployment- and allocator-dependent.  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