CVE-2026-50572
mediumEnvoy is an open source edge and service proxy designed for cloud-native applications.
Vendor / product: Envoyproxy — envoy
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Affected products
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
References
- https://github.com/envoyproxy/envoy/commit/8dacef38337aeffd62866b5c5910104b63b33db8 security-advisories@github.com
- https://github.com/envoyproxy/envoy/commit/a49085623654e27e9ad6298928557644b849d7ce security-advisories@github.com
- https://github.com/envoyproxy/envoy/commit/c1b29534a294cb0999e99e1fe0de000310165f03 security-advisories@github.com
- https://github.com/envoyproxy/envoy/commit/c524571ffad517ba650d9563f85afa89194e2cfb security-advisories@github.com
- https://github.com/envoyproxy/envoy/releases/tag/v1.36.10 security-advisories@github.com
- https://github.com/envoyproxy/envoy/releases/tag/v1.37.6 security-advisories@github.com
- https://github.com/envoyproxy/envoy/releases/tag/v1.38.4 security-advisories@github.com
- https://github.com/envoyproxy/envoy/releases/tag/v1.39.1 security-advisories@github.com
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-q8wp-gf7q-m8cv security-advisories@github.com