CVE-2026-95685 MISP Missing Authorization on replaceSuggestionInReport Event Report Action

Medium 5.3 Published Updated

An authenticated user can modify event report suggestions without proper permissions, allowing unauthorized data alteration in MISP.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-95685?

CVE-2026-95685 is a medium-severity missing authorization vulnerability in MISP, published on 22 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

MISP contains an access control flaw in the EventReports functionality. The replaceSuggestionInReport action, which allows modification of suggestion content within an event report, was incorrectly mapped to the wildcard permission ('*') in the ACLComponent, making it accessible to any authenticated user regardless of their assigned permissions. All analogous report-modification actions correctly required the perm_add permission, while read-only actions such as downloadAsPDF appropriately used the wildcard. 

An authenticated user without the perm_add permission could invoke the replaceSuggestionInReport endpoint to alter report suggestion data, violating the intended authorization model. 

This constitutes an improper authorization weakness that could lead to unauthorized modification of event report content, potentially corrupting shared threat intelligence data or injecting misleading information into reports relied upon by other analysts and automated consumers.

Weakness: CWE-862

Which versions are affected by CVE-2026-95685?

How do I fix CVE-2026-95685?

No fix has been published for CVE-2026-95685 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-95685 being exploited?

There is no known exploitation of CVE-2026-95685 in the wild and no public exploit code.

Sources

Also known as GHSA-385h-fw9f-cf6x.

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