{"id":"CVE-2026-103397","revision":null,"records":[{"revision":"55480fa587e2420e837c888f631152c5","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-103397","aliases":[],"title":"OpenSave before 2.4.0-beta.1 Authentication Bypass via Spoofed Relay Sender","description":"OpenSave before 2.4.0-beta.1 fails to validate sender identity in WAN relay requests, allowing unpaired room members to impersonate paired devices by spoofing the RelayMessage From field. Attackers who know the room code can join, read paired peer identifiers from announcements, and send forged requests to access protected sync routes including save data, snapshots, and file operations.","state":0,"publishedAt":"2026-09-30T14:48:57.063+00:00","modifiedAt":"2026-10-02T16:19:36.553+00:00","affected":[{"ecosystem":"Vendor product","name":"OpenSave","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Liquid-co\",\n                    \"product\": \"OpenSave\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:github/Liquid-co/OpenSave\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"2.4.0-beta.1\"\n                        }\n                    ],\n                    \"repo\": \"https://github.com/Liquid-co/OpenSave\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","score":6.3,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","score":5.6,"severity":"MEDIUM"}],"references":["https://gist.github.com/mansurmavlankulov/2ca66f95965fb9d4aab353bcf2434cdb","https://github.com/Liquid-co/OpenSave/commit/2f2612b13233ac123e01a03cb3008c44bacaeae3","https://github.com/Liquid-co/OpenSave/blob/v2.3.1/internal/p2p/wanclient_handlers.go#L268-L282","https://github.com/Liquid-co/OpenSave","https://www.vulncheck.com/advisories/opensave-before-2.4.0-beta.1-authentication-bypass-via-spoofed-relay-sender"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-103397","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-103397","identifiers":["CVE-2026-103397"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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Not a global EPSS backfill.","generation":"2026-11-11T19:58:45.4661486+00:00","complete":true,"records":1097,"lastAttemptAt":"2026-11-11T19:58:45.4661486+00:00","lastSuccessAt":"2026-11-11T19:58:45.6274866+00:00","error":null,"lastVerifiedAt":"2026-11-11T19:58:45.6274869+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-0feae4fee9a0467f9dde710515b6c624","complete":false,"records":13753,"lastAttemptAt":"2026-11-11T19:59:11.1509472+00:00","lastSuccessAt":"2026-11-11T19:59:11.147+00:00","error":"100 identifier lookups failed; latest failures include request timeout. 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