--- title: "TYPO3-EXT-SA-2019-017: Multiple vulnerabilities in extension \"SLUB: Event Registration\" (slub_events)" url: "https://news.typo3.com/security/advisory/typo3-ext-sa-2019-017" description: "It has been discovered that the extension \"SLUB: Event Registration\" (slub_events) is susceptible to Remote Code Execution, Unrestricted File Upload and 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-2019-017: Multiple vulnerabilities in extension "SLUB: Event Registration" (slub_events) - [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-2019-017: Multiple vulnerabilities in extension "SLUB: Event Registration" (slub\_events) ====================================================================================================== 15 October 2019 ![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 "SLUB: Event Registration" (slub\_events) is susceptible to Remote Code Execution, Unrestricted File Upload and 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: October 15, 2019 - Component Type: Third party extension. This extension is not a part of the TYPO3 default installation. - Vulnerability Type: Remote Code Execution, Unrestricted File Upload and Cross Site Scripting - Affected Versions: 3.0.2 and below - Severity: Critical - Suggested CVSS v3.0: [AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:X](https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:X) - CVE: CVE-2019-16700 ### Problem Description The extension allows to upload arbitrary files to the webserver. For versions *1.2.2 and below*, this vulnerability results in Remote Code Execution. In versions *later than 1.2.2*, the vulnerability can result in Denial of Service, since the webspace can be filled up with arbitrary files. The extension also includes jQuery 2.2.4 which is known to be vulnerable against Cross Site Scripting. ### Solution An updated version 3.0.3  is available from the TYPO3 extension manager and at Users of the extension are advised to update the extension as soon as possible. ### Credits Credits go to Security Team Member Torben Hansen who discovered and reported the vulnerability. ### 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)