CVE-2026-54357 MEDIUM

CVE-2026-54357: MISP improper authorization allows organization administrators to modify site administrator user settings

Vendor Misp
Product misp
Weakness CWE-863 · Incorrect authorization
Published June 12, 2026
Last update June 12, 2026

CVSS base score

5.1/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

What the vulnerability does

01Description

An improper authorization vulnerability in MISP allowed an authenticated organization administrator to access or modify user settings belonging to site administrator accounts within the same organization. The affected access-control checks scoped administrative actions by organization membership but did not exclude higher-privileged site administrator users. As a result, an organization administrator could potentially view or alter site administrator user settings and related login profile information, crossing the intended privilege boundary between organization administration and site-wide administration. The patch hardens the ACL logic by excluding site administrator accounts from organization administrator–managed user sets, adding explicit authorization failure when a target user is not administrable, and ensuring user setting and login profile operations fail closed.

Key dates

02Disclosure timeline

June 12, 2026 CVE published
June 12, 2026 Record updated