CVE-2026-49343

Klever-Go is the Go implementation of the Klever blockchain protocol. In versions prior to 1.7.18, the account-data trie syncers are vulnerable to a resource-exhaustion flaw that leaks bounded throttler slots on error paths. In syncDataTrie in both userAccountsSyncer.go and kappAccountsSyncer.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-FW38-PC54-JVX9 Klever-Go KVM: Throttler slot leak in trie account-data sync causes epoch bootstrap / state sync DoS

Summary The account-data trie syncers leak bounded throttler slots on error paths in syncDataTrie. Each failed trie sync permanently consumes one slot from the NumGoRoutinesThrottler, and the slot is never returned unless the sync succeeds or the root hash was already present. I confirmed this on...

Klever-Go KVM: Throttler slot leak in trie account-data sync causes epoch bootstrap / state sync DoS

Summary The account-data trie syncers leak bounded throttler slots on error paths in syncDataTrie. Each failed trie sync permanently consumes one slot from the NumGoRoutinesThrottler, and the slot is never returned unless the sync succeeds or the root hash was already present. I confirmed this on...

Denial of Service (DoS)

Overview Affected versions of this package are vulnerable to Denial of Service DoS in the ProcessReceivedMessage process. An attacker can exhaust global throttler slots by sending malformed compressed P2P batch messages that trigger decompression errors, causing the slots to be permanently consum...

Denial of Service (DoS)

Overview Affected versions of this package are vulnerable to Denial of Service DoS in the ProcessReceivedMessage process. An attacker can exhaust global throttler slots by sending malformed compressed P2P batch messages that trigger decompression errors, causing the slots to be permanently consum...

Denial of Service (DoS)

Overview Affected versions of this package are vulnerable to Denial of Service DoS in the ProcessReceivedMessage process. An attacker can exhaust global throttler slots by sending malformed compressed P2P batch messages that trigger decompression errors, causing the slots to be permanently consum...

Denial of Service (DoS)

Overview Affected versions of this package are vulnerable to Denial of Service DoS in the ProcessReceivedMessage process. An attacker can exhaust global throttler slots by sending malformed compressed P2P batch messages that trigger decompression errors, causing the slots to be permanently consum...

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...