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MEDIUM severity

derhansen/sf_event_mgt vulnerable to Broken Access Control in Backend ModuleGHSA-4576-pgh2-g34j

MEDIUMFix: derhansen/sf_event_mgt@a08c2cd

GHSA-4576-pgh2-g34j is a medium-severity (CVSS 4.3) CWE-284 vulnerability in derhansen/sf_event_mgt. A fix is available for derhansen/sf_event_mgt — see the affected versions and patch details below.

Also known asCVE-2024-24751
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 5, 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-4576-pgh2-g34j.

EPSS Exploitation Probability

via FIRST.org ↗
0.5%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs42th percentile — riskier than 42% of all scored CVEsHighest risk
0.00%0.33%0.66%0.99%0.3%0.5%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐘derhansen/sf_event_mgt

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

sf_event_mgt is an event management and registration extension for the TYPO3 CMS based on ExtBase and Fluid. In affected versions the existing access control check for events in the backend module got broken during the update of the extension to TYPO3 12.4, because the RedirectResponse from the $this->redirect() function was never handled. This issue has been addressed in version 7.4.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistderhansen/sf_event_mgt≥ 7.0.0&&< 7.4.07.4.0composer require derhansen/sf_event_mgt:^7.4.0

Affected Products

1 product · 1 configurations
Application
event management and registrationderhansen
1 version
7.0.0

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update derhansen/sf_event_mgt to 7.4.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-4576-pgh2-g34j is resolved across your whole dependency graph.

  3. Workarounds

    Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Frequently Asked Questions

The existing access control check for events in the backend module got broken during the update of the extension to TYPO3 12.4, because the `RedirectResponse` from the `$this->redirect()` function was never handled.
O3 Security · Impact-Aware SCA

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derhansen/sf_event_mgt vulnerable to Broken Access…