GHSA-cf5r-3pvm-w64w is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in innologi/typo3-appointments. A fix is available for innologi/typo3-appointments — see the affected versions and patch details below.
typo3-appointments vulnerable to Cross-site Scripting
EPSS Exploitation Probability
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-cf5r-3pvm-w64w 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 379,145 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
innologi/typo3-appointmentsReal-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
A vulnerability, which was classified as problematic, was found in innologi appointments Extension up to 2.0.5 on TYPO3. This affects an unknown part of the component Appointment Handler. The manipulation of the argument formfield leads to cross site scripting. It is possible to initiate the attack remotely. Upgrading to version 2.0.6 is able to address this issue. The identifier of the patch is 986d3cb34e5e086c6f04e061f600ffc5837abe7f. It is recommended to upgrade the affected component. The identifier VDB-217353 was assigned to this vulnerability.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | innologi/typo3-appointments | all versions | 2.0.6composer require innologi/typo3-appointments:^2.0.6 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for innologi/typo3-appointments, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update innologi/typo3-appointments to 2.0.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-cf5r-3pvm-w64w is resolved across your whole dependency graph.
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.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-cf5r-3pvm-w64w can be triaged on real exposure rather than presence alone.
Tailored to GHSA-cf5r-3pvm-w64w. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-cf5r-3pvm-w64w in your dependencies?
O3 Security finds GHSA-cf5r-3pvm-w64w across Packagist dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.