Improper Certificate Validation

github.com/envoyproxy/envoy is vulnerable to improper certificate validation. The vulnerability is due to incorrect handling of embedded null bytes \0 in OTHERNAME SAN values within mTLS certificate matching, which allows an attacker to bypass certificate validation and achieve unauthorized acces...

SUSE CVE-2026-32811

Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. When using Heimdall in envoy gRPC decision API mode with versions 0.7.0-alpha through 0.17.10, wrong encoding of the query URL string allows rules with non-wildcard path expressions to be bypassed. Envoy splits t...

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...

Cilium L7 proxy may bypass Kubernetes NetworkPolicy for same-node traffic

Impact Ingress Network Policies are not enforced for traffic from pods to L7 Services Envoy, GAMMA with a local backend on the same node, when Per-Endpoint Routing is enabled and BPF Host Routing is disabled. Per-Endpoint Routing is disabled by default, but is automatically enabled in deployments...

CVE-2026-26311

Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, a logic vulnerability in Envoy's HTTP connection manager FilterManager that allows for Zombie Stream Filter Execution. This issue creates a "Use-After-Free" UAF or state-corruption window where...

CVE-2026-26310

Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, calling Utility::getAddressWithPort with a scoped IPv6 addresses causes a crash. This utility is called in the data plane from the originalsrc filter and the dns filter. This vulnerability is fixe...

CVE-2026-26309

Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, an off-by-one write in Envoy::JsonEscaper::escapeString can corrupt std::string null-termination, causing undefined behavior and potentially leading to crashes or out-of-bounds reads when the...

CVE-2026-26330

Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, At the rate limit filter, if the response phase limit with applyonstreamdone in the rate limit configuration is enabled and the response phase limit request fails directly, it may crash Envoy. Whe...

CVE-2026-32811

Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. When using Heimdall in envoy gRPC decision API mode with versions 0.7.0-alpha through 0.17.10, wrong encoding of the query URL string allows rules with non-wildcard path expressions to be bypassed. Envoy splits t...

CVE-2026-26308

Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, the Envoy RBAC Role-Based Access Control filter contains a logic vulnerability in how it validates HTTP headers when multiple values are present for the same header name. Instead of validating eac...

Protection Mechanism Failure

github.com/envoyproxy/envoy is vulnerable to Protection Mechanism Failure. The vulnerability is due to accepting and forwarding client data before a successful 2xx response in TCP proxy mode, which allows an attacker to cause desynchronization when upstream proxies reject the CONNECT request...

JLSEC-2026-2 Envoy is a cloud-native high-performance edge/middle/service proxy

Envoy is a cloud-native high-performance edge/middle/service proxy. Envoy’s HTTP/2 codec may leak a header map and bookkeeping structures upon receiving RSTSTREAM immediately followed by the GOAWAY frames from an upstream server. In nghttp2, cleanup of pending requests due to receipt of the GOAWA...

GO-2026-4742 Heimdall: Path received via Envoy gRPC corrupted when containing query string in github.com/dadrus/heimdall

Heimdall: Path received via Envoy gRPC corrupted when containing query string in github.com/dadrus/heimdall...

Improper Encoding or Escaping of Output

Overview Affected versions of this package are vulnerable to Improper Encoding or Escaping of Output in the processing of gRPC requests received from Envoy when the path contains a query string. An attacker can cause incorrect path handling by sending specially crafted requests with query strings...

GHSA-P224-6X5R-FJPM Ory Oathkeeper has a path traversal authorization bypass

Description Ory Oathkeeper is vulnerable to an authorization bypass via HTTP path traversal. An attacker can craft a URL containing path traversal sequences e.g. /public/../admin/secrets that resolves to a protected path after normalization, but is matched against a permissive rule because the ra...

CVE-2026-32811 Heimdall: Path received via Envoy gRPC corrupted when containing query string

Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. When using Heimdall in envoy gRPC decision API mode with versions 0.7.0-alpha through 0.17.10, wrong encoding of the query URL string allows rules with non-wildcard path expressions to be bypassed. Envoy splits t...

CVE-2026-32811

Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. When using Heimdall in envoy gRPC decision API mode with versions 0.7.0-alpha through 0.17.10, wrong encoding of the query URL string allows rules with non-wildcard path expressions to be bypassed. Envoy splits t...

CVE-2026-32811 Heimdall: Path received via Envoy gRPC corrupted when containing query string

Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. When using Heimdall in envoy gRPC decision API mode with versions 0.7.0-alpha through 0.17.10, wrong encoding of the query URL string allows rules with non-wildcard path expressions to be bypassed. Envoy splits t...

CVE-2026-32811 Heimdall: Path received via Envoy gRPC corrupted when containing query string

Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. When using Heimdall in envoy gRPC decision API mode with versions 0.7.0-alpha through 0.17.10, wrong encoding of the query URL string allows rules with non-wildcard path expressions to be bypassed. Envoy splits t...

PT-2026-26778

Name of the Vulnerable Software and Affected Versions Ory Oathkeeper affected versions not specified Description Ory Oathkeeper is susceptible to an authorization bypass due to a path traversal issue. An attacker can potentially bypass security checks by crafting URLs with path traversal sequence...