Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in Pimcore admin-ui-classic-bundle - CVE-2023-42817
Published: September 25, 2023 / Updated: July 22, 2026
Vulnerability identifier: #VU139129
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-42817
CWE-ID: CWE-80
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Pimcore
Affected software:
Pimcore admin-ui-classic-bundle
Pimcore admin-ui-classic-bundle
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary script code in the administrator's browser.
The vulnerability exists due to cross-site scripting in the translations dialog box when processing translation values containing format specifiers. A remote user can inject a crafted translation string to execute arbitrary script code in the administrator's browser.
The issue is related to translation values including "%s" being parsed by sprintf() instead of being displayed literally, and exploitation requires access to translations.
How to mitigate CVE-2023-42817
Install security update from vendor's website.