Is CVE-2026-30927 actively exploited?

No active exploitation of CVE-2026-30927 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-30927 be exploited remotely?

Yes. CVE-2026-30927 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-30927?

CVE-2026-30927 has a CVSS score of 5.4 (MEDIUM).

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MEDIUM

CVE-2026-30927

CWE-639Published: March 10, 2026· Updated: Mar 13, 2026

5.4

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:1.7th

Official Description

Admidio is an open-source user management solution. Prior to 5.0.6, in modules/events/events_function.php, the event participation logic allows any user who can participate in an event to register OTHER users by manipulating the user_uuid GET parameter. The condition uses || (OR), meaning if possibleToParticipate() returns true (event is open for participation), ANY user - not just leaders - can specify a different user_uuid and register/cancel participation for that user. The code then operates on $user->getValue('usr_id') (the target user from user_uuid) rather than the current user. This vulnerability is fixed in 5.0.6.

NVD Source

Technical Analysis

CVE-2026-30927 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.