CVE-2026-10854CWE-200

Unauthorized exposure of private galaxies in MISP event template creation

Medium · published June 4, 2026

CVSS v4.0
5.3
EPSS
0%
Percentile
6.8
In the wild
Unconfirmed
What it is

A visibility control issue in the event template creation workflow allowed non-site-admin users to access private galaxies belonging to other organisations. The event template builder loaded all enabled galaxies without applying organisation or distribution-based access restrictions, potentially exposing private galaxy metadata such as galaxy type and description to users who should not have visibility.

The issue has been fixed by restricting galaxy queries for non-site-admin users to galaxies owned by the user’s organisation or galaxies with a non-private distribution setting. Site administrators retain visibility of all enabled galaxies.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/U:Green
EPSS
0.00176 · 6.8th percentile
Weakness
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
Published
2026-06-04T12:51Z
EPSS history
Timeline
  • 04 JUN 12:51Z
    Unauthorized exposure of private galaxies in MISP event template creation
    cvelistv5