{"id":"CVE-2026-107175","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-107175","generatedAt":"2026-10-28T01:03:07.467Z","title":"Security impact: - 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. - Conversely, newly relevant…","description":"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","published":"2026-10-07T13:17:21.000Z","lastModified":"2026-10-07T15:17:19.000Z","status":"Deferred","sourceIdentifier":"5a6e4751-2f3f-4070-9419-94fb35b644e8","cvss":{"version":"4.0","score":5.3,"severity":"MEDIUM","vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-284","CWE-665"],"affected":[],"epss":{"score":0.00207,"percentile":0.10711,"date":"2026-10-26","history":[{"date":"2026-10-08","score":0.00207,"percentile":0.09898}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.21%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-07T13:17:21.000Z","detail":{"score":"5.3","severity":"MEDIUM","publishedAt":"2026-10-07T13:17:20.563Z"},"summary":"New CVE, medium severity (CVSS 5.3)."}],"references":[{"url":"https://github.com/MISP/MISP/commit/19a389d19","source":"5a6e4751-2f3f-4070-9419-94fb35b644e8"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-107175","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}