{"id":"CVE-2026-107175","title":"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 …","summary":"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 …","severity":"medium","cvss":5.3,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N","cwe":["CWE-284","CWE-665"],"vendor":"MISP","product":"MISP","affected":["MISP < 2.5.48"],"published":"2026-10-07","updated":"2026-10-07","sourceUpdated":"2026-10-07T13:17:20.703","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-107175","references":[{"url":"https://github.com/MISP/MISP/commit/19a389d19","label":"5a6e4751-2f3f-4070-9419-94fb35b644e8"}],"tags":["nvd","cve.org"],"cvssSource":"cna","ingestedAt":"2026-10-07T13:31:04.598Z","slug":"CVE-2026-107175","body":"## Overview\n\nMISP 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\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}