CVE-2026-52878 Klever-Go: Unauthenticated nil-pointer DoS in P2P transaction validation can halt the chain

Klever-Go is the Go implementation of the Klever blockchain protocol. Versions 1.7.14 through 1.7.17 are vulnerable to a nil-pointer panic triggered by a protobuf Transaction whose embedded RawData sub-message is omitted. This omission causes RawData to decode to nil. Every transaction gossiped o...

CVE-2026-52878 Klever-Go: Unauthenticated nil-pointer DoS in P2P transaction validation can halt the chain

Klever-Go is the Go implementation of the Klever blockchain protocol. Versions 1.7.14 through 1.7.17 are vulnerable to a nil-pointer panic triggered by a protobuf Transaction whose embedded RawData sub-message is omitted. This omission causes RawData to decode to nil. Every transaction gossiped o...

CVE-2026-52878

Klever-Go is the Go implementation of the Klever blockchain protocol. Versions 1.7.14 through 1.7.17 are vulnerable to a nil-pointer panic triggered by a protobuf Transaction whose embedded RawData sub-message is omitted. This omission causes RawData to decode to nil. Every transaction gossiped o...

CVE-2026-52878 Klever-Go: Unauthenticated nil-pointer DoS in P2P transaction validation can halt the chain

Klever-Go is the Go implementation of the Klever blockchain protocol. Versions 1.7.14 through 1.7.17 are vulnerable to a nil-pointer panic triggered by a protobuf Transaction whose embedded RawData sub-message is omitted. This omission causes RawData to decode to nil. Every transaction gossiped o...

EUVD-2026-54718

Klever-Go is the Go implementation of the Klever blockchain protocol. Versions 1.7.14 through 1.7.17 are vulnerable to a nil-pointer panic triggered by a protobuf Transaction whose embedded RawData sub-message is omitted. This omission causes RawData to decode to nil. Every transaction gossiped o...

CVE-2026-52878

CVE-2026-52878 affects Klever-Go (versions 1.7.14–1.7.17). A nil RawData sub-message in protobuf Transaction triggers a nil-pointer panic when txVersionChecker.CheckTxVersion dereferences tx.RawData.Version without a nil check, causing a crash in the libp2p pubsub/the node process. The crash prop...

Information Exposure

Overview Affected versions of this package are vulnerable to Information Exposure in pkg/api/norman/customization/clusterregistrationtokens/import.go is vulnerable to an unauthenticated cluster-existence oracle through the /v3/import/tokenclusterId.yaml import endpoint. An attacker can enumerate...

CVE-2026-55998

The endpoint /v3/import/tokenclusterId.yaml retrieves the cluster object before validating the token. When a valid cluster ID references a cluster that has private registry secrets configured, a nil pointer dereference in pkg/systemtemplate/privateregistry.go causes the request to return HTTP 502...

CVE-2026-55998 Cluster Existence Oracle via Unauthenticated Import Endpoint

The endpoint /v3/import/tokenclusterId.yaml retrieves the cluster object before validating the token. When a valid cluster ID references a cluster that has private registry secrets configured, a nil pointer dereference in pkg/systemtemplate/privateregistry.go causes the request to return HTTP 502...

CVE-2026-55998

The CVE describes an unauthenticated import endpoint vulnerability: /v3/import/{token}_{clusterId}.yaml returns 502 for valid cluster IDs that reference clusters with private registry secrets due to a null pointer dereference in pkg/systemtemplate/private_registry.go ; non-existent cluster IDs re...

CVE-2026-55998 Cluster Existence Oracle via Unauthenticated Import Endpoint

The endpoint /v3/import/tokenclusterId.yaml retrieves the cluster object before validating the token. When a valid cluster ID references a cluster that has private registry secrets configured, a nil pointer dereference in pkg/systemtemplate/privateregistry.go causes the request to return HTTP 502...

CVE-2026-55998: Observable Response Discrepancy

The endpoint /v3/import/tokenclusterId.yaml retrieves the cluster object before validating the token. When a valid cluster ID references a cluster that has private registry secrets configured, a nil pointer dereference in pkg/systemtemplate/privateregistry.go causes the request to return HTTP 502...

SUSE CVE-2026-42183

Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. From version 4.0.0 to before version 4.0.5, a nil pointer dereference in server/auth/gatekeeper.go rbacAuthorization causes a panic denial of service for SSO users whose claims match a...

SUSE CVE-2026-44317

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's PCF POST /npcf-policyauthorization/v1/app-sessions handler panics on a single authenticated request whose ascReqData.suppFeat == "1" enabling traffic-routing feature negotiation and whose medComponents...

SUSE CVE-2026-44322

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF PATCH /3gpp-pfd-management/v1/afId/transactions/transId/applications/appId handler panics with a nil-pointer dereference when the upstream UDR call fails AND the consumer wrapper returns err != nil...

SUSE CVE-2026-44323

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's UDR nudr-dr DELETE /subscription-data/ueId/servingPlmnId/ee-subscriptions/subsId/amf-subscriptions handler contains a nil-pointer dereference reachable from a single authenticated request, after one...

SUSE CVE-2026-44328

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's SMF mounts the UPI management route group without inbound OAuth2 middleware. On top of that, the DELETE /upi/v1/upNodesLinks/upNodeRef handler unconditionally dereferences upNode.UPF after the type-guarded...

CVE-2026-47427

GitHub MCP Server is GitHub's official MCP Server. Prior to 1.1.0, the CompletionsHandler function in pkg/github/server.go accesses params.Ref without first checking whether it is nil, so a completion/complete request with a missing or empty ref field triggers a nil pointer dereference and a Go...

CVE-2026-47427 GitHub MCP Server: Nil Pointer Dereference DoS in completion/complete Handler

GitHub MCP Server is GitHub's official MCP Server. Prior to 1.1.0, the CompletionsHandler function in pkg/github/server.go accesses params.Ref without first checking whether it is nil, so a completion/complete request with a missing or empty ref field triggers a nil pointer dereference and a Go...

CVE-2026-47427

GitHub MCP Server is GitHub's official MCP Server. Prior to 1.1.0, the CompletionsHandler function in pkg/github/server.go accesses params.Ref without first checking whether it is nil, so a completion/complete request with a missing or empty ref field triggers a nil pointer dereference and a Go...