--- title: "TYPO3-CORE-SA-2017-005: Information Disclosure in TYPO3 CMS" url: "https://news.typo3.com/security/advisory/typo3-core-sa-2017-005" description: It has been discovered, that TYPO3 CMS 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 CMS --- # TYPO3-CORE-SA-2017-005: Information Disclosure in TYPO3 CMS - [Developer & Technology](https://news.typo3.com/article/category/developer-technology) - Security / [TYPO3 CMS](https://news.typo3.com/article/category/security/typo3-cms) TYPO3-CORE-SA-2017-005: Information Disclosure in TYPO3 CMS =========================================================== 05 September 2017 ![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 TYPO3 CMS is susceptible to Information Disclosure. - ![](https://news.typo3.com/typo3temp/assets/t3g/blog/gravatar/b8266fdc667b773926c59081862ab148.jpeg)[Oliver Hader](https://news.typo3.com/article/author/oliver-hader) **Component Type:** TYPO3 CMS **Release Date:** September 5, 2017 **Vulnerability Type:** Information Disclosure **Affected Versions:** 7.6.0 to 7.6.21 and 8.0.0 to 8.7.4 **Severity:** Low **Suggested CVSS v2.0:** [AV:N/AC:L/Au:S/C:P/I:N/A:N/E:F/RL:OF/RC:C](https://nvd.nist.gov/vuln-metrics/cvss/v2-calculator?vector=(AV:N/AC:L/Au:S/C:P/I:N/A:N/E:F/RL:OF/RC:C)) **CVE:** not assigned yet **Problem Description:** Failing to properly check user permission on file storages, editors could gain knowledge of protected storages and its folders as well as using them in a file collection being rendered in the frontend. A valid backend user account is needed to exploit this vulnerability. **Solution:** Update to TYPO3 versions 7.6.22 or 8.7.5 that fix the problem described. **Credits:** Thanks to Tobias Kummer who reported this issue and to TYPO3 core and security team member Georg Ringer who fixed the issue. **General Advice:** Follow the recommendations that are given in the [TYPO3 Security Guide](http://docs.typo3.org/typo3cms/SecurityGuide/ "Opens external link in new window"). Please subscribe to the [typo3-announce](http://lists.typo3.org/cgi-bin/mailman/listinfo/typo3-announce) mailing list. **General Note:** All security related code changes are tagged so that you can easily look them up on our [review system](https://review.typo3.org/#/q/status:merged+project:Packages/TYPO3.CMS+topic:security,n,z). ![](https://news.typo3.com/typo3temp/assets/t3g/blog/gravatar/cc7cba9757f98fbe05023a139119df74.jpeg) About the Author [Oliver Hader](https://news.typo3.com/article/author/oliver-hader) Core Developer at TYPO3 GmbH,Hof, Germany [Website](https://typo3.com)[Twitter](https://twitter.com/ohader)[LinkedIn](https://www.linkedin.com/in/oliverhader/)[Xing](https://www.xing.com/profile/Oliver_Hader) Oliver started to work with TYPO3 in 2005 and was fascinated by the product and its universe. Since 2007 he is member of the TYPO3 Core Team. After going back to university in 2014 for achieving a postgraduate master degree in internet web science, he is now researching on advanced web technology topics in general and for TYPO3 in particular. In his spare time, Oliver loves to go cycling cross-country in the uplands around Hof (Germany) in northern Bavaria - at the region where he's living as well. [More posts by this author](https://news.typo3.com/article/author/oliver-hader)