v1.39.3

2026-10-07T08:52:16Z•94276c4a04dc77e063eb3f176627161141f9417f7d90c4ea78295597b513aa51
CVE-2026-35189API key authenticationBoringSSLCONNECT requestsEnvoy ProxyHTTP/2OAuth2 filterTLS certificate parsingdenial of servicepatch availableremote denial of servicesecurity advisorysecurity release

What happened

Envoy Proxy security releases v1.39.3, v1.38.6, v1.37.8, and v1.36.12 address two unauthenticated denial-of-service crash conditions in the OAuth2 and API key authentication filters when processing CONNECT-style requests without a :path header. Earlier releases v1.39.2, v1.38.5, v1.37.7, and v1.36.11 address CVE-2026-35189 in bundled BoringSSL, preventing excessive memory allocation during TLS certificate parsing that could enable remote denial of service. BoringSSL FIPS builds are noted as unpatched for this issue.

Why it matters

A reviewed impact interpretation has not been published for this record.

Evidence and limitations

Source ID
envoyproxy_envoy_releases
Record identifier
94276c4a04dc77e063eb3f176627161141f9417f7d90c4ea78295597b513aa51
Enrichment time
2026-10-07T08:52:16Z
AI-assisted enrichment
Yes

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Record · v1.39.3 · Baitaphish