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01 Record

CVE-2026-94393

MISP Event Report Cross-Event Reparenting via Unscoped UUID Resolution in editReport

MediumPUBLISHEDCNA: CIRCL
CNA base score6.4 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N

02 Description

MISP Event Report Cross-Event Reparenting via Unscoped UUID Resolution in editReport

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
0.37% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 30.8% of scored records. A rank, not a probability.
NVD base score
6.4 (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:H/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 13:14Z1 MO AGO
Last updated
2026-09-21 15:18Z1 MO AGO
Reserved
2026-09-21
Assigning CNA
CIRCL
Record state
PUBLISHED
Severity
Medium (CVSS 6.4)
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:H/SA:N
Weaknesses
  • CWE-284Improper Access ControlPillar
  • CWE-639Authorization Bypass Through User-Controlled KeyBase
Data version
5.2
Document digest
ee9f1076f3e94a3e93684e130768cd10dd0b4209fa74c157c2e23bc1f6e126e6

05 Affected products

VendorProductVersionsPlatforms
MISPMISP0 to < 2.5.47—

06 References

07 Remediation

The fix adds an ownership check in editReport: before adopting an existing report found by UUID, the code now verifies that the report's event_id matches the event being edited. If the UUID resolves to a report belonging to a different event, the operation is rejected with an error message, preventing cross-event reparenting, unauthorized read, and unauthorized overwrite of reports.