Vulnerability Description
TYPO3 Fluid before versions 2.0.8, 2.1.7, 2.2.4, 2.3.7, 2.4.4, 2.5.11 and 2.6.10 is vulnerable to Cross-Site Scripting. Three XSS vulnerabilities have been detected in Fluid: 1. TagBasedViewHelper allowed XSS through maliciously crafted additionalAttributes arrays by creating keys with attribute-closing quotes followed by HTML. When rendering such attributes, TagBuilder would not escape the keys. 2. ViewHelpers which used the CompileWithContentArgumentAndRenderStatic trait, and which declared escapeOutput = false, would receive the content argument in unescaped format. 3. Subclasses of AbstractConditionViewHelper would receive the then and else arguments in unescaped format. Update to versions 2.0.8, 2.1.7, 2.2.4, 2.3.7, 2.4.4, 2.5.11 or 2.6.10 of this typo3fluid/fluid package that fix the problem described. More details are available in the linked advisory.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Typo3 | Fluid | < 2.0.8 |
Related Weaknesses (CWE)
References
- https://github.com/TYPO3/Fluid/commit/f20db4e74cf9803c6cffca2ed2f03e1b0b89d0dcPatchThird Party Advisory
- https://github.com/TYPO3/Fluid/security/advisories/GHSA-hpjm-3ww5-6cpfExploitThird Party Advisory
- https://typo3.org/security/advisory/typo3-core-sa-2020-009ExploitVendor Advisory
- https://github.com/TYPO3/Fluid/commit/f20db4e74cf9803c6cffca2ed2f03e1b0b89d0dcPatchThird Party Advisory
- https://github.com/TYPO3/Fluid/security/advisories/GHSA-hpjm-3ww5-6cpfExploitThird Party Advisory
- https://typo3.org/security/advisory/typo3-core-sa-2020-009ExploitVendor Advisory
FAQ
What is CVE-2020-26216?
CVE-2020-26216 is a vulnerability with a CVSS score of 8.0 (HIGH). TYPO3 Fluid before versions 2.0.8, 2.1.7, 2.2.4, 2.3.7, 2.4.4, 2.5.11 and 2.6.10 is vulnerable to Cross-Site Scripting. Three XSS vulnerabilities have been detected in Fluid: 1. TagBasedViewHelper all...
How severe is CVE-2020-26216?
CVE-2020-26216 has been rated HIGH with a CVSS base score of 8.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-26216?
Check the references section above for vendor advisories and patch information. Affected products include: Typo3 Fluid.