MediumGHSA-rgcg-28xm-8mmwBIT-typo3-2021-32669CVE-2021-32669
Cross-Site Scripting in Backend Grid View
Published 22 Jul 2021 · Updated 10 Sept 2026
Affected packages
typo3/cms-coreComposer
- Affected
- >=8.0.0 <8.7.41
- Fixed in
- 8.7.41
Update to the fixed version for your release line, for example:
composer require typo3/cms-core:^8.7.41typo3/cms-coreComposer
- Affected
- >=9.0.0 <9.5.28
- Fixed in
- 9.5.28
Update to the fixed version for your release line, for example:
composer require typo3/cms-core:^9.5.28typo3/cms-coreComposer
- Affected
- >=10.0.0 <10.4.18
- Fixed in
- 10.4.18
Update to the fixed version for your release line, for example:
composer require typo3/cms-core:^10.4.18typo3/cms-coreComposer
- Affected
- >=11.0.0 <11.3.1
- Fixed in
- 11.3.1
Update to the fixed version for your release line, for example:
composer require typo3/cms-core:^11.3.1typo3/cmsComposer
- Affected
- >=10.0.0 <10.4.18
- Fixed in
- 10.4.18
Update to the fixed version for your release line, for example:
composer require typo3/cms:^10.4.18typo3/cmsComposer
- Affected
- >=11.0.0 <11.3.1
- Fixed in
- 11.3.1
Update to the fixed version for your release line, for example:
composer require typo3/cms:^11.3.1typo3/cmsComposer
- Affected
- >=9.0.0 <9.5.28
- Fixed in
- 9.5.28
Update to the fixed version for your release line, for example:
composer require typo3/cms:^9.5.28Details
Problem
Failing to properly encode settings for _backend layouts_, the corresponding grid view is vulnerable to persistent cross-site scripting. A valid backend user account is needed to exploit this vulnerability.
Solution
Update to TYPO3 versions 8.7.41 ELTS, 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.
Is GHSA-rgcg-28xm-8mmw in any of your client repos?
Checking one package by hand is fine. Checking it across forty client projects is not. NPMscan reads the lockfiles in every GitHub repo you pick, finds each project with an affected typo3/cms-core, and gives you the command that fixes it.
References
- Linkgithub.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-rgcg-28xm-8mmw
- Advisorynvd.nist.gov/vuln/detail/CVE-2021-32669
- Linkgithub.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2021-32669.yaml
- Linkgithub.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2021-32669.yaml
- Linktypo3.org/security/advisory/typo3-core-sa-2021-011
Advisory data from OSV.dev (opens OSV.dev in a new tab), refreshed daily.