---
id: CVE-2026-85546
title: >-
  MISP contains a cross-site request forgery (CSRF) vulnerability in the sharing
  group quick-edit functionality
summary: >-
  MISP contains a cross-site request forgery (CSRF) vulnerability in the sharing
  group quick-edit functionality. The addOrg, removeOrg, addServer, and
  removeServer actions share the __initialiseSGQuickEdit() helper, where the
  HTTP method v…
severity: high
cvss: 8.6
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:L/SC:N/SI:L/SA:N'
cwe:
  - CWE-352
vendor: misp
product: misp
affected:
  - misp <= 2.4.45
published: '2026-09-04'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T08:17:01.553'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-85546'
references:
  - url: 'https://github.com/MISP/MISP/commit/3060d93cb'
    label: 5a6e4751-2f3f-4070-9419-94fb35b644e8
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-04T19:35:24.607798Z'
cvssSource: cna
epss: 0.00198
epssPercentile: 0.09921
ingestedAt: '2026-09-08T15:33:26.960Z'
---

## Overview

MISP contains a cross-site request forgery (CSRF) vulnerability in the sharing group quick-edit functionality. The addOrg, removeOrg, addServer, and removeServer actions share the __initialiseSGQuickEdit() helper, where the HTTP method validation intended to restrict these operations to POST requests was commented out.

As a result, these state-changing actions could be invoked using GET requests. An attacker could craft a URL targeting one of the affected actions and cause an authenticated MISP user with sufficient privileges to request it, for example through a malicious link or embedded web resource.

Successful exploitation could modify the membership of a MISP sharing group without the victim intentionally performing the operation. Depending on the action performed, an attacker could add or remove organisations or servers from a sharing group, potentially granting unintended access to information distributed through that sharing group or disrupting legitimate information sharing.

The patch restores HTTP method enforcement centrally in __initialiseSGQuickEdit() by calling allowMethod(['post']), ensuring that all four affected quick-edit operations require POST requests and are therefore subject to the application's normal protections for state-changing requests.

## Remediation

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