Moderate severityNVD Advisory· Published Mar 23, 2021· Updated Aug 3, 2024
Cross-Site Scripting in Content Preview
CVE-2021-21340
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 database fields used as _descriptionColumn_ are vulnerable to cross-site scripting when their content gets previewed. A valid backend user account is needed to exploit this vulnerability. This is fixed in versions 10.4.14, 11.1.1 .
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
typo3/cms-backendPackagist | >= 10.0.0, < 10.4.14 | 10.4.14 |
typo3/cms-backendPackagist | >= 11.0.0, < 11.1.1 | 11.1.1 |
typo3/cms-corePackagist | >= 10.0.0, < 10.4.14 | 10.4.14 |
typo3/cms-corePackagist | >= 11.0.0, < 11.1.1 | 11.1.1 |
typo3/cmsPackagist | >= 10.0.0, < 10.4.14 | 10.4.14 |
typo3/cmsPackagist | >= 11.0.0, < 11.1.1 | 11.1.1 |
Affected products
5- osv-coords4 versions
>= 10.0.0, < 10.4.14+ 3 more
- (no CPE)range: >= 10.0.0, < 10.4.14
- (no CPE)range: >= 10.0.0, < 10.4.14
- (no CPE)range: >= 10.0.0, < 10.4.14
- (no CPE)range: >= 10.0.0, < 10.4.14
Patches
Vulnerability mechanics
References
7- github.com/advisories/GHSA-fjh3-g8gq-9q92ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2021-21340ghsaADVISORY
- github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2021-21340.yamlghsaWEB
- github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2021-21340.yamlghsaWEB
- github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-fjh3-g8gq-9q92ghsax_refsource_CONFIRMWEB
- packagist.org/packages/typo3/cms-backendghsax_refsource_MISCWEB
- typo3.org/security/advisory/typo3-core-sa-2021-007ghsax_refsource_MISCWEB
News mentions
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