google.golang.org/grpc: gRPC-Go: Denial of Service via malformed RPC requests

A flaw was found in gRPC-Go. Servers created with xds.NewGRPCServer can be exploited by a remote client sending a malformed RPC request that lacks the required :authority or Host headers. This can trigger an index-out-of-bounds panic, leading to the termination of the entire server process and a...

Important: Red Hat Security Advisory: rhc security update

An update for rhc is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for ea...

google.golang.org/grpc: gRPC-Go: Denial of Service via malformed RPC requests

A flaw was found in gRPC-Go. Servers created with xds.NewGRPCServer can be exploited by a remote client sending a malformed RPC request that lacks the required :authority or Host headers. This can trigger an index-out-of-bounds panic, leading to the termination of the entire server process and a...

Important: Red Hat Security Advisory: rhc security update

An update for rhc is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability...

google.golang.org/grpc: gRPC-Go: Denial of Service via malformed RPC requests

A flaw was found in gRPC-Go. Servers created with xds.NewGRPCServer can be exploited by a remote client sending a malformed RPC request that lacks the required :authority or Host headers. This can trigger an index-out-of-bounds panic, leading to the termination of the entire server process and a...

Important: Red Hat Security Advisory: osbuild-composer security update

An update for osbuild-composer is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On. Red Hat Product Security has rated this update as having a security impact of Important. A Common...

google.golang.org/grpc: gRPC-Go: Denial of Service via malformed RPC requests

A flaw was found in gRPC-Go. Servers created with xds.NewGRPCServer can be exploited by a remote client sending a malformed RPC request that lacks the required :authority or Host headers. This can trigger an index-out-of-bounds panic, leading to the termination of the entire server process and a...

CVE-2026-115539

SwarmKit's Cluster-API proxy can overwrite a forwarded client's TLS identity with an intermediary manager's identity. WithMetadataForwardTLSInfo replaces outgoing metadata with a copy of the incoming metadata, discarding the redirect guard's changes when built with grpc-go 1.39 or later. During a...

CVE-2026-33186

CVE-2026-33186 gRPC-Go RBAC Authorization Policy Bypass via Missing :path Slash Auth Bypass Description The authz package in google.golang.org/grpc implements SDK-level RBAC authorization using deny and allow rules matched against the :path pseudo-header. The HTTP/2 server transport stores the ra...

CLEANSTART-2026-KH21564 gRPC-Go is the Go language implementation of gRPC

Security vulnerability affects the kubernetes package. gRPC-Go is the Go language implementation of gRPC...

CLEANSTART-2026-PK60234 gRPC-Go is the Go language implementation of gRPC

Security vulnerability affects the kubernetes package. gRPC-Go is the Go language implementation of gRPC...

CVE-2026-115539

SwarmKit's Cluster-API proxy can overwrite a forwarded client's TLS identity with an intermediary manager's identity. WithMetadataForwardTLSInfo replaces outgoing metadata with a copy of the incoming metadata, discarding the redirect guard's changes when built with grpc-go 1.39 or later. During a...

CVE-2026-115539

SwarmKit's Cluster-API proxy can overwrite a forwarded client's TLS identity with an intermediary manager's identity. WithMetadataForwardTLSInfo replaces outgoing metadata with a copy of the incoming metadata, discarding the redirect guard's changes when built with grpc-go 1.39 or later. During a...

CVE-2026-115539

SwarmKit's Cluster-API proxy can overwrite a forwarded client's TLS identity with an intermediary manager's identity. WithMetadataForwardTLSInfo replaces outgoing metadata with a copy of the incoming metadata, discarding the redirect guard's changes when built with grpc-go 1.39 or later. During a...

CVE-2026-115539

The SwarmKit Cluster-API proxy is vulnerable to a privilege escalation flaw when built with grpc-go 1.39 or later . The WithMetadataForwardTLSInfo function incorrectly replaces outgoing metadata with a copy of incoming metadata, discarding redirect guard changes. During a brief window following a...

B63-POC-CVE-2026-33186

CVE-2026-33186 -- grpc-go :path authorization bypass A denied, privileged gRPC method executes for an unauthenticated caller when the HTTP/2 :path pseudo-header omits its mandatory leading slash. Lab-verified PoC, a two-twin Docker lab grpc-go v1.79.2 vulnerable / v1.79.3 patched, and the evidenc...

PT-2026-144600

Name of the Vulnerable Software and Affected Versions SwarmKit versions prior to 2.1.3 Description The Cluster-API proxy can overwrite a forwarded client's TLS identity with the identity of an intermediary manager. This occurs because the WithMetadataForwardTLSInfo function replaces outgoing...

CLEANSTART-2026-MG33162 gRPC-Go is the Go language implementation of gRPC

Security vulnerability affects the cert-manager package. gRPC-Go is the Go language implementation of gRPC...

osbuild-composer security update

An update is available for osbuild-composer. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list A service for building customized OS artifacts, such as VM images an...

RLSA-2026:95272 Important: osbuild-composer security update

A service for building customized OS artifacts, such as VM images and OSTree commits, that uses osbuild under the hood. Besides building images for local usage, it can also upload images directly to cloud. It is compatible with composer-cli and cockpit-composer clients. Security Fixes:...