Medium severity · published Sep 22, 2026
CVE-2026-95683
MISP Overmind Event View Discloses Report Content Bypassing Report-Level ACL
5.3
CVSS
0.4%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 33% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MI
MISP · MISP
before 2.5.47 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-95683
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-95683
github.com
https://github.com/MISP/MISP/commit/6932aace8
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