CVE-2022-3255 is a medium-severity (CVSS 6.8) Cross-site Scripting (XSS) vulnerability in pimcore/pimcore. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for pimcore/pimcore — see the affected versions and patch details below.
Cross-site Scripting (XSS) - Reflected in pimcore/pimcore
Exploitation Status
Proof-of-concept exploit code exists
- CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
- A successful exploit gives an attacker total control of the affected component, not partial access.
Exploitation and automatability from CISA’s SSVC triage for CVE-2022-3255.
EPSS Exploitation Probability
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
pimcore/pimcoreReal-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
If an attacker can control a script that is executed in the victim's browser, then they can typically fully compromise that user. Amongst other things, the attacker can perform any action within the application that the user can perform; view any information that the user is able to view; modify any information that the user is able to modify; and/or initiate interactions with other application users, including malicious attacks, that will appear to originate from the initial victim user. A patch for this issue is available at commit 1e916e7d668c9e47b217e20cc0ea4812f466201b and anticipated to be part of version 10.5.7.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | pimcore/pimcore | all versions | 10.5.7composer require pimcore/pimcore:^10.5.7 |
Affected Products
pimcorepimcoreResearch use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for pimcore/pimcore, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update pimcore/pimcore to 10.5.7 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-3255 is resolved across your whole dependency graph.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.
Frequently Asked Questions
Is CVE-2022-3255 in your dependencies?
Find it across Packagist, including transitive dependencies.