Klever-Go MultiDataInterceptor has remote OOM via crafted compressed P2P payload — CVE-2026-44697

Summary

## Summary 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 the receiving node from a sub-50 KiB gossip payload. A single packet is sufficient to OOM-kill a validator with conventional memory provisioning. Fleet-wide application affects chain…

Product

go: github.com/klever-io/klever-go

What to do

General, cautious steps (verify details in the official source):

• Prioritize patching or mitigation immediately (treat as actively risky).
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

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