When a user creates or edits a report inside an event, MISP can identify an existing report using its UUID without properly checking whether that report actually belongs to the same event.
As a result, a user who has editing rights on one event could potentially move a report from another event into their own event, as long as they know or can guess the report’s UUID. Once moved, they could view and change information that they were not originally allowed to access.
The vulnerability requires the attacker to have editor access to at least one event and to know or discover a valid report UUID.
The main impact is that private event reports could be exposed or modified across event boundaries, bypassing MISP’s normal access restrictions.
Version affected: <2.5.47
Metrics
Affected Vendors & Products
References
| Link | Providers |
|---|---|
| https://github.com/MISP/MISP/commit/43665b9bb |
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History
Mon, 21 Sep 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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Mon, 21 Sep 2026 15:45:00 +0000
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| First Time appeared |
Misp
Misp misp |
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| Vendors & Products |
Misp
Misp misp |
Mon, 21 Sep 2026 13:30:00 +0000
| Type | Values Removed | Values Added |
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| Description | When a user creates or edits a report inside an event, MISP can identify an existing report using its UUID without properly checking whether that report actually belongs to the same event. As a result, a user who has editing rights on one event could potentially move a report from another event into their own event, as long as they know or can guess the report’s UUID. Once moved, they could view and change information that they were not originally allowed to access. The vulnerability requires the attacker to have editor access to at least one event and to know or discover a valid report UUID. The main impact is that private event reports could be exposed or modified across event boundaries, bypassing MISP’s normal access restrictions. Version affected: <2.5.47 | |
| Title | MISP Event Report Cross-Event Reparenting via Unscoped UUID Resolution in editReport | |
| Weaknesses | CWE-284 CWE-639 |
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| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: CIRCL
Published: 2026-09-21T13:14:00.619Z
Updated: 2026-09-21T15:18:17.855Z
Reserved: 2026-09-21T13:13:54.299Z
Link: CVE-2026-94393
Updated: 2026-09-21T15:18:10.327Z
Status : Deferred
Published: 2026-09-21T14:17:30.500
Modified: 2026-09-21T16:17:30.677
Link: CVE-2026-94393
No data.