GHSA-8mq9-fqv8-59wf
Cross-Site Scripting in Page Preview
Quick fix
GHSA-8mq9-fqv8-59wf — typo3/cms-core: upgrade to the fixed version with the command below.
composer require typo3/cms-core:^9.5.28Details
> ### 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)
Are you affected?
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Affected packages
9.0.0Fixed in: 9.5.28composer require typo3/cms-core:^9.5.2810.0.0Fixed in: 10.4.18composer require typo3/cms-core:^10.4.1811.0.0Fixed in: 11.3.1composer require typo3/cms-core:^11.3.1References
- https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-8mq9-fqv8-59wf[WEB]
- https://github.com/TYPO3/typo3/security/advisories/GHSA-8mq9-fqv8-59wf[WEB]
- https://nvd.nist.gov/vuln/detail/CVE-2021-32667[ADVISORY]
- https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2021-32667.yaml[WEB]
- https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2021-32667.yaml[WEB]
- https://github.com/TYPO3/typo3[PACKAGE]
- https://typo3.org/security/advisory/typo3-core-sa-2021-009[WEB]