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Not in CISA KEV
NONE severity

GHSA-7pfv-hr63-h7cw — admidio/admidio

NONEFix: Admidio/admidio@e47f70c

GHSA-7pfv-hr63-h7cw is a none-severity (CVSS 0) CWE-639 vulnerability in admidio/admidio. A fix is available for admidio/admidio — see the affected versions and patch details below.

Admidio: Event participation IDOR - non-leaders can register other users for events via user_uuid parameter

Also known asCVE-2026-30927
Published
Mar 9, 2026
Updated
Mar 10, 2026
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Sep 18, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for GHSA-7pfv-hr63-h7cw.

EPSS Exploitation Probability

via FIRST.org ↗
0.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs17th percentile — riskier than 17% of all scored CVEsHighest risk

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

How urgent is this, really

GHSA-7pfv-hr63-h7cw plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.

Where this sits among everything scored

Of 376,715 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.

Real-World Exposure

1 pkg affected
🐘admidio/admidio

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

Vulnerability

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.

Line 47: $getUserUuid = admFuncVariableIsValid($_GET, 'user_uuid', 'uuid', ...) Line 424: if ($event->possibleToParticipate() || $participants->isLeader($gCurrentUserId))

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.

Impact

  • Register unwilling users for events (potential harassment/spam)
  • Cancel other users' event participation
  • Manipulate event participant counts and comments
  • If events have participation limits, fill slots with unwanted registrations

Fix

For non-leader users, force user_uuid to the current user:

if (!$participants->isLeader($gCurrentUserId)) {
    $getUserUuid = $gCurrentUser->getValue('usr_uuid');
}

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistadmidio/admidioall versions5.0.6composer require admidio/admidio:^5.0.6

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for admidio/admidio, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update admidio/admidio to 5.0.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-7pfv-hr63-h7cw is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-7pfv-hr63-h7cw can be triaged on real exposure rather than presence alone.

Tailored to GHSA-7pfv-hr63-h7cw. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

## Vulnerability 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. Line 47: `$getUserUuid = admFuncVariableIsValid($_GET, 'user_uuid', 'uuid', ...)` Line 424: `if ($event->possibleToParticipate() || $participants->isLeader($gCurrentUserId))` 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
O3 Security · Impact-Aware SCA

Is GHSA-7pfv-hr63-h7cw in your dependencies?

O3 Security finds GHSA-7pfv-hr63-h7cw across Packagist dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

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GHSA-7pfv-hr63-h7cw: admidio/admidio | O3 Security