XSS in Typo3
CVE-2021-32667
TYPO3 is an open source PHP based web content management system. Versions 9.0.0 through 9.5.28, 10.0.0 through 10.4.17, and 11.0.0 through 11.3.0 have a cross-site scripting vulnerability. When _Page TSconfig_ settings are not properly encoded, corresponding page preview module (_Web>View_) is vulnerable to persistent cross-site scripting. A valid backend user account is needed to exploit this vulnerability. TYPO3 versions 9.5.29, 10.4.18, 11.3.1 contain a patch for this issue.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.006 (45.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N.
Affected products
- Typo3
- Typo3 Typo3.cms — versions >= 9.0.0, < 9.5.29, >= 10.0.0, < 10.4.18, >= 11.0.0, < 11.3.1
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-32667?
- CVE-2021-32667 is a medium-severity vulnerability in Typo3, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2021-07-20.
- How severe is CVE-2021-32667?
- Medium severity. CVSS v3 base score is 6.4 out of 10.