It has been discovered that Neos is vulnerable to several XSS attacks.
Full advisory text at GitHub advisory.
packagist package report
Is typo3/neos safe?
typo3/neos (packagist) has 3 known vulnerabilities, the worst rated HIGH. Upgrade to 4.3.3 or later to clear all of them. No malicious-package signal is recorded.
// reach
0 direct dependencies
none carry a known advisory
0 packages depend on it
dependents not yet indexed for this ecosystem
Create a free accountfor every dependency path, dependent and what to upgrade
// ai model usage
Tracked for PyPI packages. HuggingFace models declare Python dependencies, so packagist packages are not covered.
cvss
7.5
high
severity band, no base score published
epss
not scored
chance of exploitation in 30 days
xyz score
3.3
low
CyberXYZ composite out of 10
fig. 01 — GHSA-4542-p56h-8xww, the advisory selected below
// 3 advisories
Is typo3/neos safe to install?
CyberXYZ does not call a package safe in absolute terms. It records 3 known vulnerabilities for typo3/neos (packagist), the worst rated HIGH, and no malicious-package signal. Whether it is acceptable depends on the version you run.
Does typo3/neos have known vulnerabilities?
Yes. CyberXYZ records 3 known vulnerabilities for typo3/neos (packagist), the worst rated HIGH. They are GHSA-4542-p56h-8xww, GHSA-g4xv-r3qw-v3q2, GHSA-wr3c-6c22-m9v6.
Which version of typo3/neos should I use?
4.3.3 or later clears every advisory recorded for typo3/neos (packagist). Check the release you pick before installing it.
How do I check typo3/neos before installing?
Search typo3/neos in CyberXYZ Check at https://cyberxyz.io/check?q=typo3%2Fneos. The xyz Scanner checks a project's dependencies, and CyberXYZ Proxy checks each package as it is installed.
Checked 2026-11-14 at 13:08 UTC. The most recent advisory here was published 2024-06-05. Updated continuously from NVD, GHSA, OSV and CNA feeds.