Denial Of Service (DoS)

github.com/envoyproxy/envoy is vulnerable to a Denial Of Service DoS. The vulnerability is due to a re-entry bug in the JwksFetcherImpl during failed remote JWKS fetching with multiple JWT tokens, which allows an attacker to trigger a crash by sending crafted requests that cause overlapping fetch...

GHSA-MP85-7MRQ-R866 Envoy crashes when JWT authentication is configured with the remote JWKS fetching

Summary Envoy crashes when JWT authentication is configured with the remote JWKS fetching, allowmissingorfailed is enabled, multiple JWT tokens are present in the request headers and the JWKS fetch fails. Details This is caused by a re-entry bug in the JwksFetcherImpl. When the first token's JWKS...

PT-2025-48969

Name of the Vulnerable Software and Affected Versions Envoy versions 1.33.12 through 1.36.2 Description Envoy, a high-performance edge/middle/service proxy, experiences crashes when JWT authentication is configured with remote JWKS fetching enabled, allow missing or failed is set to true, multipl...