{"id":"CVE-2026-5536","summary":"FedML-AI FedML gRPC server grpc_server.py sendMessage deserialization","details":"A weakness has been identified in FedML-AI FedML up to 0.8.9. Affected is the function sendMessage of the file grpc_server.py of the component gRPC server. Executing a manipulation can lead to deserialization. The attack may be performed from remote. The vendor was contacted early about this disclosure but did not respond in any way.","modified":"2026-07-08T08:22:05.534591314Z","published":"2026-04-05T02:45:12.841Z","database_specific":{"unresolved_ranges":[{"extracted_events":[{"introduced":"0.8.0"},{"last_affected":"0.8.0"},{"introduced":"0.8.1"},{"last_affected":"0.8.1"},{"introduced":"0.8.2"},{"last_affected":"0.8.2"},{"introduced":"0.8.3"},{"last_affected":"0.8.3"},{"introduced":"0.8.4"},{"last_affected":"0.8.4"},{"introduced":"0.8.5"},{"last_affected":"0.8.5"},{"introduced":"0.8.6"},{"last_affected":"0.8.6"},{"introduced":"0.8.7"},{"last_affected":"0.8.7"},{"introduced":"0.8.8"},{"last_affected":"0.8.8"},{"introduced":"0.8.9"},{"last_affected":"0.8.9"}],"source":"AFFECTED_FIELD"}],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5536.json","cwe_ids":["CWE-20","CWE-502"],"cna_assigner":"VulDB"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5536.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-5536"},{"type":"ADVISORY","url":"https://vuldb.com/submit/782201"},{"type":"ADVISORY","url":"https://vuldb.com/vuln/355289"},{"type":"REPORT","url":"https://github.com/AnalogyC0de/public_exp/issues/26"},{"type":"REPORT","url":"https://vuldb.com/vuln/355289/cti"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/fedml-ai/fedml","events":[{"introduced":"0"},{"last_affected":"f352cfb5a59f63d4f85ede43682962a5f9ea4a6a"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"0.8.9"}],"cpe":"cpe:2.3:a:tensoropera:fedml:*:*:*:*:*:*:*:*","source":"CPE_RANGE"}}],"versions":["v0.8.9","v0.8.8","v0.8.7","v0.8.4","v0.8.3","v0.8.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-5536.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X"}]}