--- title: "TYPO3-EXT-SA-2020-016: Information Disclosure in extension \"Localization Manager\" (l10nmgr)" url: "https://news.typo3.com/security/advisory/typo3-ext-sa-2020-016" description: "It has been discovered that the extension \"Localization Manager\" (l10nmgr) is susceptible to Information Disclosure." 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-2020-016: Information Disclosure in extension "Localization Manager" (l10nmgr) - [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-2020-016: Information Disclosure in extension "Localization Manager" (l10nmgr) =========================================================================================== 02 September 2020 ![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 "Localization Manager" (l10nmgr) is susceptible to Information Disclosure. - ![](https://news.typo3.com/typo3temp/assets/t3g/blog/gravatar/e4eaa13e33dd086a9c06f2570cb34609.jpeg)[Torben Hansen](https://news.typo3.com/article/author/torben-hansen) - Release Date: September 02, 2020 - Component Type: Third party extension. This extension is not a part of the TYPO3 default installation. - Component: Localization Manager (l10nmgr) - Vulnerability Type: Information Disclosure - Affected Versions: 7.3.3 and below, 8.0.0 - 8.6.0 and 9.0.0 - 9.1.0 - Severity: Medium - Suggested CVSS v3.1: [AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/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:N/S:U/C:L/I:N/A:N/E:F/RL:O/RC:C&version=3.1) - References: [CVE-2020-25025](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25025) ### Problem Description A missing access check allows an authenticated backend user to view and export data of translatable fields which are outside of the users access scope resulting in Information Disclosure. ### Solution Updated versions 7.4.0, 8.7.0 and 9.2.0 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 Dmitry Dulepov on behalf of the University of Basel who discovered the issue and to Jo Hasenau 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)