Cross-Site Scripting in Fluid view helpers
> ### Meta > * CVSS: `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:F/RL:O/RC:C` (5.7) > * CWE-79 ### Problem It has been discovered that system extension Fluid (`typo3/cms-fluid`) of the TYPO3 core is vulnerable to cross-site scripting passing user-controlled data as argument to Fluid view helpers. ``` <f:form ... fieldNamePrefix="{payload}" /> <f:be.labels.csh ... label="{payload}" /> <f:be.menus.actionMenu ... label="{payload}" /> ``` ### Solution Update to TYPO3 versions 9.5.23 or 10.4.10 that fix the problem described. ### Credits Thanks to TYPO3 security team member Oliver Hader who reported this issue and to TYPO3 security team members Helmut Hummel & Oliver Hader who fixed the issue. ### References * [TYPO3-CORE-SA-2020-010](https://typo3.org/security/advisory/typo3-core-sa-2020-010)
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2020-26227US | medium6.1 | — | ||
TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 9.5.23 and 10.4.10 the system extension Fluid (typo3/cms-fluid) of the TYPO3 core is vulne… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2020-26227.yamlWEB
- https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2020-26227.yamlWEB
- https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-vqqx-jw6p-q3rfWEB
- https://nvd.nist.gov/vuln/detail/CVE-2020-26227ADVISORY
- https://packagist.org/packages/typo3/cms-coreWEB
- https://typo3.org/security/advisory/typo3-core-sa-2020-010WEB
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