Envoy is a cloud-native, open source edge and service proxy. A crash was observed in `EnvoyQuicServerStream::OnInitialHeadersComplete()` with following call stack. It is a use-after-free caused by QUICHE continuing push request headers after `StopReading()` being called on the stream. As after `StopReading()`, the HCM's `ActiveStream` might have already be destroyed and any up calls from QUICHE could potentially cause use after free.
CVE-2024-32974
CVSS base score
5.9 (v3.1)
Severity
MEDIUM
Attack vector
Network
Weakness
CWE-416
Last modified
November 5, 2026
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
envoyproxy envoy
References
- github.com Exploit, Third Party Advisory
- github.com Exploit, Third Party Advisory