CVE-2021-32667
MEDIUM6.4EPSS 0.41%Cross-Site Scripting in Page Preview
Published: 7/22/2021Modified: 3/13/2026
Description
> ### Meta > * CVSS: `CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:F/RL:O/RC` (5.0) ### Problem Failing to properly encode _Page TSconfig_ settings, corresponding page preview module (_Web>View_) is vulnerable to persistent cross-site scripting. A valid backend user account is needed to exploit this vulnerability. ### Solution Update to TYPO3 versions 9.5.28, 10.4.18, 11.3.1 that fix the problem described. ### Credits Thanks to TYPO3 core merger Oliver Bartsch who reported and fixed the issue. ### References * [TYPO3-CORE-SA-2021-009](https://typo3.org/security/advisory/typo3-core-sa-2021-009)
Affected packages (3)
- Bitnami/typo3>= 9.0.0, < 9.5.287, >= 10.0.0, < 10.4.17, >= 11.0.0, < 11.3.0
- Packagist/typo3/cms>= 10.0.0, < 10.4.18
- Packagist/typo3/cms-core>= 9.0.0, < 9.5.28
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.4 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N |
References (7)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2021-32667
- PATCHhttps://github.com/TYPO3/typo3
- WEBhttps://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2021-32667.yaml
- WEBhttps://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2021-32667.yaml
- WEBhttps://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-8mq9-fqv8-59wf
- WEBhttps://github.com/TYPO3/typo3/security/advisories/GHSA-8mq9-fqv8-59wf
- WEBhttps://typo3.org/security/advisory/typo3-core-sa-2021-009