Severity by source
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Green
Primary rating from Vendor (CIRCL) · only source for this CVE.
CVSS VectorVendor: CIRCL
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Green
Lifecycle Timeline
4DescriptionCVE.org
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.
AnalysisAI
Private galaxy metadata in MISP versions up to and including 2.5.38 was exposed to authenticated non-site-admin users through the event template builder workflow due to missing organisation and distribution-based access controls. The EventTemplatesController.php __setBuilderConfig() method queried all enabled galaxies without filtering by ownership or distribution level, allowing users from one organisation to read galaxy names, types, and descriptions that belong to other organisations and are marked private. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid authenticated session with at minimum low-privilege access (confirmed by PR:L in the CVSS 4.0 vector) to a MISP instance hosting multiple organisations where at least one organisation has created private galaxies. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 5.3 (Medium) is consistent with the actual impact: network-accessible (AV:N), low complexity (AC:L), no attack timing requirements (AT:N), low privilege required (PR:L), no user interaction (UI:N), and low confidentiality impact confined to the vulnerable system (VC:L) with zero integrity or availability impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An authenticated analyst belonging to Organisation A in a shared MISP community instance navigates to the event template builder. Without any special tooling, the builder's galaxy selector populates with all enabled galaxies - including those owned by Organisation B with private distribution - revealing their names, types, and descriptions. … |
| Remediation | The primary fix is available as upstream commit d3adfe1a097dd4b403364e9af34e208660eeec1a at https://github.com/MISP/MISP/commit/d3adfe1a097dd4b403364e9af34e208660eeec1a, which modifies EventTemplatesController.php to enforce organisation and distribution-based access controls in the galaxy query used by the template builder. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-200 – Information Exposure
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-34257
GHSA-3636-3mqq-q7x9