CVE-2026-107175 — MISP Correlation Engine Fails to Refresh When Event Distribution or Sharing Group Changes
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 mod…
Published: 2026-10-07 · CVSS: 5.3 · CVSS 4.0
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. When 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. 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 correlations may not appear after a distribution widening, degrading the completeness of threat intelligence sharing. Preconditions: - An authenticated user with write access to at least one MISP event. - The user modifies the event's distribution or sharing_group_id field. Affected versions: <2.5.48
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7