Vulnerability · Published Mar 23, 2021 · Assigned by GitHub_M

CVE-2021-21358Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in typo3/cms-form

Medium 5.4

In plain English

A medium-severity cross-site scripting in TYPO3.CMS from TYPO3. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 59% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.4Medium

Exploit odds (30 days)0.9%top 40.9% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	typo3/cms	10.4.14	GHSA-x79j-wgqv-g8h2
Packagist	typo3/cms	11.1.1	GHSA-x79j-wgqv-g8h2
Packagist	typo3/cms-core	10.4.14	GHSA-x79j-wgqv-g8h2
Packagist	typo3/cms-core	11.1.1	GHSA-x79j-wgqv-g8h2
Packagist	typo3/cms-form	10.4.14	GHSA-x79j-wgqv-g8h2
Packagist	typo3/cms-form	11.1.1	GHSA-x79j-wgqv-g8h2

Affected products (as reported)

Vendor	Product	Versions
TYPO3	TYPO3.CMS	>= 10.2.0, <= 10.4.13>= 11.0.0, <= 11.1.0

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

References

https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-x79j-wgqv-g8h2 x_refsource_CONFIRM
https://packagist.org/packages/typo3/cms-form x_refsource_MISC
https://typo3.org/security/advisory/typo3-core-sa-2021-004 x_refsource_MISC