{"id":"CVE-2026-44697","summary":"Klever-Go MultiDataInterceptor: remote OOM via crafted compressed P2P payload","details":"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 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 liveness. This vulnerability is fixed in 1.7.17.","aliases":["GHSA-87m7-qffr-542v","GO-2026-5246"],"modified":"2026-07-08T08:14:40.517596790Z","published":"2026-05-29T17:14:43.465Z","database_specific":{"cwe_ids":["CWE-409","CWE-770"],"cna_assigner":"GitHub_M","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44697.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44697.json"},{"type":"ADVISORY","url":"https://github.com/klever-io/klever-go/security/advisories/GHSA-87m7-qffr-542v"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44697"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/klever-io/klever-go","events":[{"introduced":"0"},{"fixed":"cf9f612c39d04d2de4aecc36e0989d6562e59ce3"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"1.7.16"}],"source":"AFFECTED_FIELD"}}],"versions":["v1.7.15","v1.7.14"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44697.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H"}]}