{"schema":"threatline.record/2","record":{"id":"CVE-2026-107175","aliases":[],"summary":"MISP Correlation Engine Fails to Refresh When Event Distribution or Sharing Group Changes","details":"MISP contains a defect in its event save workflow that prevents the correlation engine from recalculating correlations when an event's distribution level or sharing group is modified.\n\nWhen a user edits an existing event and changes its distribution or sharing_group_id, the internal before-save hook stored the incoming (new) data rather than the previously persisted values. As a result, the after-save comparison that determines whether a correlation refresh is needed never detected the change, and stale correlations persisted.\n\nSecurity impact:\n\n- Stale correlations may continue to expose event data to users in a broader sharing group after the event has been moved to a more restrictive group, resulting in unintended information disclosure.\n\n- Conversely, newly relevant correlations may not appear after a distribution widening, degrading the completeness of threat intelligence sharing.\n\nPreconditions:\n\n- An authenticated user with write access to at least one MISP event.\n\n- The user modifies the event's distribution or sharing_group_id field.\n\nAffected versions: <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-2026-107175","source_modified_at":"2026-10-07T14:40:14.998Z","fetched_at":"2026-10-23T18:48:36.087640Z","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-2026-107175","source_modified_at":"2026-10-07T14:40:14.998Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"MISP","ecosystem":null},"version":"2.5.48","basis":"first unaffected version stated in the CVE record"}],"cvss":5.3,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00207,"percentile":0.10265,"score_date":"2026-10-23"},"published_at":"2026-10-07T12:38:44.252Z","modified_at":"2026-10-07T14:40:14.998Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-107175","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-07T14:40:14.998Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-107175","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/19a389d19","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":"2026-10-07T14:39:59.827397Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-07T14:40:14.998Z","content_hash":"dc801206eea38ea6f5b782b6f9621dea6793cc5aa301a89bb472d9933cc9193a"}}