{"schema":"threatline.record/2","record":{"id":"CVE-2026-104908","aliases":[],"summary":"MISP Decaying Model Import Mass Assignment Allows Cross-Organization Model Overwrite and Default Flagging","details":"MISP contains an improper input validation vulnerability in the decaying model import functionality. The import endpoint was intended to create a new decaying model belonging exclusively to the importing user's organisation, with the default flag forced to off.\n\nHowever, the application stripped only the top-level id and uuid fields and pinned org_id and default on the outer array before saving the data flat. A user with decaying-model permissions could supply a nested model key carrying its own primary key, organisation identifier, and default flag, which bypassed those guards during the save operation.\n\nImpact:\n\n- A user with perm_decaying could overwrite an existing decaying model belonging to another organisation in place, altering its name, formula, parameters, or ownership.\n\n- A user could create or modify a model flagged as the organisation default, affecting scoring behaviour for other users.\n\n- A user could reassign a model's organisation to an arbitrary value.\n\nPreconditions:\n\n- Authenticated user with decaying-model permission (perm_decaying).\n\n- Network access to the MISP instance.\n\nAffected: <2.5.48.","categories":["Unclassified"],"product":"MISP","vendor":"MISP","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-104908","source_modified_at":"2026-10-02T16:19:17.687Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"MISP","vendor":"MISP","versions":[{"lessThan":"2.5.48","status":"affected","version":"0","versionType":"semver"}],"defaultStatus":null}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-104908","source_modified_at":"2026-10-02T16:19:17.687Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"MISP","ecosystem":null},"version":"2.5.48","basis":"first unaffected version stated in the CVE record"}],"cvss":7.1,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00287,"percentile":0.20135,"score_date":"2026-10-23"},"published_at":"2026-10-02T15:56:13.969Z","modified_at":"2026-10-02T16:19:17.687Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-104908","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-10-02T16:19:17.687Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-104908","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/MISP/MISP/commit/70e319e4b","tags":["patch"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-02T16:18:57.561492Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-02T16:19:17.687Z","content_hash":"363760d5aa6f72c2b829cdf3019ed09b4bcd8b48b9fcde29ca5b720cff787a7a"}}