MISP: Insufficient Authorization Allows Sharing Group Editors to Overwrite Organization Metadata
Published Sep 22, 2026
5.3
MEDIUMCVSS 4.0
EPSS 0.38%
Description
MISP contains an authorization flaw in the Organisation model's captureOrg method. When the $force parameter is set to true, the method unconditionally overwrites organization metadata fields without verifying that the invoking user holds sufficient privileges. A user with a sharing group (SG) editor role can trigger this code path, allowing them to modify organization metadata that should be restricted to site administrators or users with sync permissions.
According to the commit message, this could lead to blueprint-based sharing group manipulation, meaning an attacker with SG editor access could alter organizational attributes in ways that influence how sharing groups and blueprints behave across the MISP instance.
The vulnerability requires an authenticated user with at least SG editor privileges and network access to the MISP web interface. The impact is primarily on the integrity of organization records and, potentially, on the integrity of sharing group configurations derived from those records.
Affected products
-
- Version 0StatusaffectedConstraints<2.5.47
- Version
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Vendor solution
The fix adds an authorization check to the captureOrg method so that the forced overwrite of organization metadata fields is only permitted when the invoking user holds either the site_admin permission or the sync permission. This ensures that low-privilege roles such as sharing group editors can no longer trigger the metadata overwrite path, closing the authorization gap.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Sep 22, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 4, 2026.
Score over time
Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (2 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 0.38% (0.00381) | 29.78th | v5 (v2026.06.15) |
| Oct 1, 2026 | 0.38% (0.00381) | 29.70th | v5 (v2026.06.15) |
References (1)
| Link | Providers | Tags |
|---|---|---|
| https://github.com/MISP/MISP/commit/f3ec974ee | patch |
Change history (0)
No recorded changes yet.