--- title: "TYPO3-CORE-SA-2015-009: Non-Persistent Cross-Site Scripting" url: "https://news.typo3.com/security/advisory/typo3-core-sa-2015-009" description: It has been discovered, that TYPO3 is susceptible to Non-Persistent Cross-Site Scripting image: "https://news.typo3.com/_assets/d1e01514e4c4a5b3147940fa2ec50682/Images/og-image-news.jpg" date: 2026-06-11 modified: 2026-06-11 categories: - "Product Updates & Roadmap" - TYPO3 CMS --- # TYPO3-CORE-SA-2015-009: Non-Persistent Cross-Site Scripting - [Product Updates & Roadmap](https://news.typo3.com/article/category/product-updates-roadmap) - Security / [TYPO3 CMS](https://news.typo3.com/article/category/security/typo3-cms) TYPO3-CORE-SA-2015-009: Non-Persistent Cross-Site Scripting =========================================================== 08 September 2015 ![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 is susceptible to Non-Persistent Cross-Site Scripting - ![](https://news.typo3.com/typo3temp/assets/t3g/blog/gravatar/7569d41262328e5ed8d27b53e03970ec.png)[Helmut Hummel](https://news.typo3.com/article/author/helmut-hummel) **Component Type:** TYPO3 CMS **Release Date:** September 8, 2015 Vulnerable subcomponent: Backend -------------------------------- **Vulnerability Type:** Cross-Site Scripting **Affected Versions:** Versions 6.2.0 to 6.2.14, 7.0.0 to 7.3.0 **Severity:** Low **Suggested CVSS v2.0:** [AV:N/AC:M/Au:S/C:P/I:P/A:N/E:F/RL:OF/RC:C](http://nvd.nist.gov/cvss.cfm?version=2&vector=(AV:N/AC:M/Au:S/C:P/I:P/A:N/E:F/RL:OF/RC:C)) **CVE:** CVE-2015-5956 **Problem Description:** It has been discovered, that it is possible to forge a link to a backend module, which contains a JavaScript payload. This JavaScript is executed, if an authenticated editor with access to the module follows the link and after that, is tricked to click on a certain HTML target. Because TYPO3 versions 7.4.0 and above include a secret token unknown to an attacker in every URL, an exploit would not be feasible for these versions. **Solution:** Update to TYPO3 versions 6.2.15 or 7.4.0 that fix the problem described. **Credits:** Thanks to Julien Ahrens (secunet Security Networks AG) who discovered and reported 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/bb9efc51bced8582e7b8c235f4b5f2b5.png) About the Author [Helmut Hummel](https://news.typo3.com/article/author/helmut-hummel) [More posts by this author](https://news.typo3.com/article/author/helmut-hummel)