Description

TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 10.4.14, 11.1.1 it has been discovered that database fields used as _descriptionColumn_ are vulnerable to cross-site scripting when their content gets previewed. A valid backend user account is needed to exploit this vulnerability. This is fixed in versions 10.4.14, 11.1.1 .

Remediation

References

CVE-2021-21340

Related Vulnerabilities

MediaWiki Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2019-16738)

Roundcube Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2015-5381)

Werkzeug WSGI URL Redirection to Untrusted Site ('Open Redirect') Vulnerability (CVE-2020-28724)

MySQL CVE-2018-3077 Vulnerability (CVE-2018-3077)

Zenphoto Unrestricted Upload of File with Dangerous Type Vulnerability (CVE-2020-36079)

Severity

Medium

Classification

CVE-2021-21340 CWE-707 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N

Tags

Missing Update Known Vulnerabilities