XSS in TYPO3
CVE-2020-26227
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 vulnerable to cross-site scripting passing user-controlled data as argument to Fluid view helpers. Update to TYPO3 versions 9.5.23 or 10.4.10 that fix the problem described.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.007 (50.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Typo3
- Typo3 Typo3.cms — versions >= 9.0.0, < 9.5.23, >= 10.0.0, < 10.4.10
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Third Party Advisory)
- security-advisories@github.com (Exploit, x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-26227?
- CVE-2020-26227 is a medium-severity vulnerability in TYPO3, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-11-23.
- How severe is CVE-2020-26227?
- Medium severity. CVSS v3 base score is 6.1 out of 10.