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01 Record

CVE-2026-94394

MISP ObjectReferencesController: Granular Distribution and Sharing Group Restrictions Bypassed When Adding Object References

MediumPUBLISHEDCNA: CIRCL
CNA base score6.3 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N

02 Description

MISP ObjectReferencesController: Granular Distribution and Sharing Group Restrictions Bypassed When Adding Object References

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.35% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 28.4% of scored records. A rank, not a probability.
NVD base score
6.3 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/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:X
NVD analysis status
Deferred. NVD last modified this record on 2026-09-21.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-09-21 13:25Z1 MO AGO
Last updated
2026-09-21 14:48Z1 MO AGO
Reserved
2026-09-21
Assigning CNA
CIRCL
Record state
PUBLISHED
Severity
Medium (CVSS 6.3)
CNA CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
Weaknesses
Data version
5.2
Document digest
f6c411cbe7726ba5f0fa552291761aab874bb6f5dad592bb37ff1f934b2c63cb

05 Affected products

VendorProductVersionsPlatforms
MISPMISP0 to < 2.5.47—

06 References

07 Remediation

The fix introduces granular authorization checks in the ObjectReferencesController add() method. For non-site-admin users, the query conditions for attributes, objects, and object attributes are now augmented with OR clauses that restrict results to: (1) entities belonging to the user's own event, (2) entities with unrestricted distribution levels (1, 2, 3, 5), or (3) entities with distribution level 4 whose sharing_group_id is in the user's authorized sharing group list. This ensures that only data the user is explicitly authorized to see under MISP's distribution and sharing-group model is included in the object reference operation.