XSS in Typo3
CVE-2021-21358
TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 10.4.14, 11.1.1 it has been discovered that the Form Designer backend module of the Form Framework is vulnerable to cross-site scripting. A valid backend user account with access to the form module is needed to exploit this vulnerability. This is fixed in versions 10.4.14, 11.1.1.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.009 (55.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Typo3
- Typo3 Typo3.cms — versions >= 10.2.0, <= 10.4.13, >= 11.0.0, <= 11.1.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Third Party Advisory, x_refsource_MISC, Release Notes)
- security-advisories@github.com (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-21358?
- CVE-2021-21358 is a medium-severity vulnerability in Typo3, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-03-23.
- How severe is CVE-2021-21358?
- Medium severity. CVSS v3 base score is 5.4 out of 10.