---
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.


  When 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.


  When 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: '2026-10-07T15:17:19.377'
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
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-07T14:39:59.827397Z'
cvssSource: cna
ingestedAt: '2026-10-07T13:31:04.598Z'
---

## Overview

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

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.