Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy's HTTP external-authorization client can retain a stale request callback after a request is rejected. When RawHttpClientImpl::onSuccess later processes the authorization response, it can invoke callbacks_ after the callback owner has been destroyed, causing a use-after-free and process crash under production traffic. The relevant scope boundary is that the vulnerable path uses the HTTP ext_authz client; the advisory does not establish the same trigger for unrelated filters. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-416"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50572.json"
}{
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "1.36.10"
},
{
"introduced": "1.37.0"
},
{
"fixed": "1.37.6"
},
{
"introduced": "1.38.0"
},
{
"fixed": "1.38.4"
},
{
"introduced": "1.39.0"
},
{
"fixed": "1.39.1"
}
],
"source": [
"AFFECTED_FIELD",
"REFERENCES"
]
}