GO-2026-5686 klever-go: REST API slow-header connection exhaustion via Gin Engine.Run in github.com/klever-io/klever-go

klever-go: REST API slow-header connection exhaustion via Gin Engine.Run in github.com/klever-io/klever-go...

GO-2026-5685 Klever-Go KVM: Hash-array amplification in P2P resolver request handling in github.com/klever-io/klever-go

Klever-Go KVM: Hash-array amplification in P2P resolver request handling in github.com/klever-io/klever-go...

GO-2026-5628 Klever-Go KVM: Unauthenticated remote node crash (nil-pointer DoS) in klever-go P2P transaction interceptor (txVersionChecker nil RawData) - potential chain halt in github.com/klever-io/klever-go

Klever-Go KVM: Unauthenticated remote node crash nil-pointer DoS in klever-go P2P transaction interceptor txVersionChecker nil RawData - potential chain halt in github.com/klever-io/klever-go...

GO-2026-5424 klever-go: Unbounded goroutine spawn on direct-message ingress enables peer-driven DoS in github.com/klever-io/klever-go

klever-go: Unbounded goroutine spawn on direct-message ingress enables peer-driven DoS in github.com/klever-io/klever-go...

GO-2026-5461 Klever-Go KVM read-only execution can commit contract delete and upgrade side effects in github.com/klever-io/klever-go

Klever-Go KVM read-only execution can commit contract delete and upgrade side effects in github.com/klever-io/klever-go...

GO-2026-5246 Klever-Go MultiDataInterceptor has remote OOM via crafted compressed P2P payload in github.com/klever-io/klever-go

Klever-Go MultiDataInterceptor has remote OOM via crafted compressed P2P payload in github.com/klever-io/klever-go...

GO-2026-5204 Klever-Go P2P MultiDataInterceptor leaks global throttler slots on malformed compressed batches (DoS) in github.com/klever-io/klever-go

Klever-Go P2P MultiDataInterceptor leaks global throttler slots on malformed compressed batches DoS in github.com/klever-io/klever-go...

GHSA-RM5C-5X2P-48WR Klever-Go KVM: Unauthenticated remote node crash (nil-pointer DoS) in klever-go P2P transaction interceptor (txVersionChecker nil RawData) - potential chain halt

Summary Every transaction gossiped on the klever-go P2P network is decoded and validated synchronously inside the libp2p pubsub topic-validator callback. The validator txVersionChecker.CheckTxVersion dereferences tx.RawData.Version with no nil check. A protobuf Transaction whose embedded RawData...

Klever-Go KVM: Unauthenticated remote node crash (nil-pointer DoS) in klever-go P2P transaction interceptor (txVersionChecker nil RawData) - potential chain halt

Summary Every transaction gossiped on the klever-go P2P network is decoded and validated synchronously inside the libp2p pubsub topic-validator callback. The validator txVersionChecker.CheckTxVersion dereferences tx.RawData.Version with no nil check. A protobuf Transaction whose embedded RawData...

GHSA-W4C6-7R69-W7J9 klever-go: REST API slow-header connection exhaustion via Gin Engine.Run

Summary The Klever seednode REST API starts a Gin engine with Engine.RunrestAPIInterface. In Gin v1.9.1, Engine.Run calls Go's default http.ListenAndServe, which constructs an HTTP server without application-level ReadHeaderTimeout, ReadTimeout, or MaxHeaderBytes limits. An unauthenticated client...

GHSA-W342-MJ6G-V9C4 Klever-Go KVM: Hash-array amplification in P2P resolver request handling

Summary A connected peer can send a compressed RequestDataTypeHashArrayType direct request that is only 442 bytes on the wire but expands into 200000 decoded hash entries inside the resolver path. On klever-go v1.7.17, this allows remote memory and CPU amplification against nodes that accept P2P...

Klever-Go KVM: Hash-array amplification in P2P resolver request handling

Summary A connected peer can send a compressed RequestDataTypeHashArrayType direct request that is only 442 bytes on the wire but expands into 200000 decoded hash entries inside the resolver path. On klever-go v1.7.17, this allows remote memory and CPU amplification against nodes that accept P2P...

PT-2026-48347

Name of the Vulnerable Software and Affected Versions klever-go versions 1.7.14 through 1.7.17 Description The REST API in the seednode and node components is susceptible to a denial of service attack. This occurs because the application uses the Gin framework's Engine.Run function, which relies ...

GHSA-74M6-4HJP-7226 Klever-Go P2P MultiDataInterceptor leaks global throttler slots on malformed compressed batches (DoS)

Publisher note Fixed in v1.7.17. Operators running v1.7.17 should upgrade. The decompression-error path in MultiDataInterceptor.ProcessReceivedMessage now releases the global throttler slot before returning guarded defer after StartProcessing, disabled when the asynchronous goroutine takes...

CVE-2026-52880

creationtimestamp| type| source ---|---|--- 2026-06-02 10:32:57+00:00| published-proof-of-concept| https://github.com/klever-io/klever-go/security/advisories/GHSA-w4c6-7r69-w7j9 2026-08-08 00:01:34+00:00| seen| https://bsky.app/profile/thehackerwire.bsky.social/post/3msjrdieu5f2m...

CVE-2026-49343

creationtimestamp| type| source ---|---|--- 2026-06-02 10:31:07+00:00| published-proof-of-concept| https://github.com/klever-io/klever-go/security/advisories/GHSA-fw38-pc54-jvx9...

CVE-2026-47249

creationtimestamp| type| source ---|---|--- 2026-06-02 10:30:29+00:00| published-proof-of-concept| https://github.com/klever-io/klever-go/security/advisories/GHSA-w342-mj6g-v9c4 2026-08-08 00:03:54+00:00| seen| https://bsky.app/profile/thehackerwire.bsky.social/post/3msjrdw2woo2y...

CVE-2026-44697

Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.17, a remote, unauthenticated denial-of-service vulnerability in Batch.Decompress data/batch/batch.go allows any peer that participates in a topic served by MultiDataInterceptor to allocate multi-gigabyte heaps on...

CVE-2026-44697

Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.17, a remote, unauthenticated denial-of-service vulnerability in Batch.Decompress data/batch/batch.go allows any peer that participates in a topic served by MultiDataInterceptor to allocate multi-gigabyte heaps on...

CVE-2026-44697

Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.17, a remote, unauthenticated denial-of-service vulnerability in Batch.Decompress data/batch/batch.go allows any peer that participates in a topic served by MultiDataInterceptor to allocate multi-gigabyte heaps on...