CVE-2026-95683

MISP Overmind Event View Discloses Report Content Bypassing Report-Level ACL

MEDIUM
5.3
CVSS Score
Published: September 22, 2026 at 02:06 PM UTC
Updated: September 22, 2026 at 04:18 PM UTC
1 product affected across 1 vendorMISP

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

In MISP, the Overmind event view enriches an event with its most recent attached report for preview purposes. The enrichment logic fetched the report using only the event ID as the lookup condition, without applying the report's own distribution/ACL constraints. Because MISP reports carry an independent distribution setting that can be more restrictive than the parent event's distribution, an authenticated user who had read access to the event could retrieve and view a report whose distribution explicitly excluded that user. Additionally, the query did not filter out soft-deleted reports, allowing retrieval of reports that had been administratively removed. The result is an unauthorized disclosure of threat-intelligence report content to users who should not have access under the report's own access-control policy. The vulnerability requires an authenticated MISP user with at least read access to the affected event.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.5.47
Affected range stops below 2.5.47, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMCIRCL
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-862CWE-639

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