CVE-2023-2341 is a high-severity (CVSS 7.3) 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) - Generic 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.
Exploitation and automatability from CISA’s SSVC triage for CVE-2023-2341.
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
Impact
Malicious JavaScript has access to all the same objects as the rest of the web page, including access to cookies and local storage, which are often used to store session tokens. If an attacker can obtain a user's session cookie, they can then impersonate that user.
Furthermore, JavaScript can read and make arbitrary modifications to the contents of a page being displayed to a user. Therefore, XSS in conjunction with some clever social engineering opens up a lot of possibilities for an attacker.
Patches
Update to version 10.5.21 or apply this patch manually https://github.com/pimcore/pimcore/commit/66f1089fb1b9bcd575bfce9b1d4abb0f0499df11.patch
Workarounds
Apply patch https://github.com/pimcore/pimcore/commit/66f1089fb1b9bcd575bfce9b1d4abb0f0499df11.patch manually.
References
https://huntr.dev/bounties/cf3901ac-a649-478f-ab08-094ef759c11d/
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | pimcore/pimcore | all versions | 10.5.21composer require pimcore/pimcore:^10.5.21 |
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 10.5.21 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2023-2341 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-2023-2341 in your dependencies?
Find it across Packagist, including transitive dependencies.