CVE-2021-32768

Cross-Site Scripting via Rich-Text Content

State: Published
Severity: 6.1 Medium
Published: Aug 10, 2021
Updated: Aug 3, 2024
Reserved: May 12, 2021

Description

TYPO3 is an open source PHP based web content management system released under the GNU GPL. In affected versions failing to properly parse, sanitize and encode malicious rich-text content, the content rendering process in the website frontend is vulnerable to cross-site scripting. Corresponding rendering instructions via TypoScript functionality HTMLparser does not consider all potentially malicious HTML tag & attribute combinations per default. In default scenarios, a valid backend user account is needed to exploit this vulnerability. In case custom plugins used in the website frontend accept and reflect rich-text content submitted by users, no authentication is required. Update to TYPO3 versions 7.6.53 ELTS, 8.7.42 ELTS, 9.5.29, 10.4.19, 11.3.2 that fix the problem described.

Scores

CVSS	Score	Vector	Source
3.1	6.1 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N	GitHub_M

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Product	Versions
TYPO3.CMSTYPO3	>= 7.0.0, < 7.6.53Affected >= 8.0.0, < 8.7.42Affected >= 9.0.0, < 9.5.29Affected >= 10.0.0, < 10.4.19Affected >= 11.0.0, < 11.3.2Affected

References

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