Vulnerability advisory
GHSA-hww5-6x85-mc24
Typo3 Arbitrary Code Execution and Cross-Site Scripting in Backend API
Severity
Severity not reported.
Affected versions
typo3/cms Packagist
All typo3/cms advisories →| Affected | Fixed in |
|---|---|
8.0.0 to before 8.7.27 | 8.7.27Advisories → |
9.0.0 to before 9.5.8 | 9.5.8Advisories → |
Description
Backend API configuration using Page TSconfig is vulnerable to arbitrary code execution and cross-site scripting. TSconfig fields of page properties in backend forms can be used to inject malicious sequences. Field tsconfig_includes is vulnerable to directory traversal leading to same scenarios as having direct access to TSconfig settings.
A valid backend user account having access to modify values for fields pages.TSconfig and pages.tsconfig_includes is needed in order to exploit this vulnerability.