--- title: "TYPO3-EXT-SA-2021-003: Cross-Site Scripting in extension \"Aimeos shop and e-commerce framework\" (aimeos)" url: "https://news.typo3.com/security/advisory/typo3-ext-sa-2021-003" description: "It has been discovered that the extension\"Aimeos shop and e-commerce framework\" (aimeos) is susceptible to Cross-Site Scripting." image: "https://news.typo3.com/_assets/d1e01514e4c4a5b3147940fa2ec50682/Images/og-image-news.jpg" date: 2026-06-11 modified: 2026-06-11 categories: - "Developer & Technology" - TYPO3 Extensions --- # TYPO3-EXT-SA-2021-003: Cross-Site Scripting in extension "Aimeos shop and e-commerce framework" (aimeos) - [Developer & Technology](https://news.typo3.com/article/category/developer-technology) - Security / [TYPO3 Extensions](https://news.typo3.com/article/category/security/typo3-extensions) TYPO3-EXT-SA-2021-003: Cross-Site Scripting in extension "Aimeos shop and e-commerce framework" (aimeos) ======================================================================================================== 16 March 2021 ![A laptop screen displaying a list of security advisories](https://news.typo3.com/typo3temp/assets/_processed_/d/c/csm_security_blog_default_77f8e86036.webp) It has been discovered that the extension"Aimeos shop and e-commerce framework" (aimeos) is susceptible to Cross-Site Scripting. - ![](https://news.typo3.com/typo3temp/assets/t3g/blog/gravatar/e4eaa13e33dd086a9c06f2570cb34609.jpeg)[Torben Hansen](https://news.typo3.com/article/author/torben-hansen) - Release Date: Mar 16, 2021 - Component Type: Third party extension. This extension is not a part of the TYPO3 default installation. - Component: "Aimeos shop and e-commerce framework" (aimeos) - Vulnerability Type: Cross-Site Scripting - Affected Versions: 20.10.4 and below, 19.10.11 and below - Severity: Medium - Suggested 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:C](https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:F/RL:O/RC:C&version=3.1) - References: [CVE-2021-28380](https://nvd.nist.gov/vuln/detail/CVE-2021-28380) ### Problem Description The extension fails to properly encode user input for output in HTML context. A valid backend user account with access to the Aimeos module is needed to exploit this vulnerability. ### Solution Updated versions 20.10.5 and 19.10.12 are available from the TYPO3 extension manager, Packagist and at Users of the extension are advised to update the extension as soon as possible. ### Credits Thanks to Aimeos for providing an updated version of the extension. ### General Advice Follow the recommendations that are given in the [TYPO3 Security Guide](https://docs.typo3.org/typo3cms/CoreApiReference/Security/Index.html#security-guidelines). Please subscribe to the [typo3-announce](http://lists.typo3.org/cgi-bin/mailman/listinfo/typo3-announce) mailing list. ![](https://news.typo3.com/typo3temp/assets/t3g/blog/gravatar/7cf52722a5b7183b29d378a2284bd103.jpeg) About the Author [Torben Hansen](https://news.typo3.com/article/author/torben-hansen) Open Source Enthusiast & TYPO3 Expert I’m a passionate open-source advocate and dedicated TYPO3 expert. As a freelancer, I offer professional TYPO3 services to clients while actively contributing to the TYPO3 ecosystem. I have developed several public TYPO3 extensions and serve as the Co-Lead of the TYPO3 Security Team, helping to enhance the platform’s security and functionality. For many years, I have been blogging about TYPO3, sharing insights and expertise with the community. [More posts by this author](https://news.typo3.com/article/author/torben-hansen)