--- title: "TYPO3-CORE-SA-2016-019: Environment Variable Injection" url: "https://news.typo3.com/security/advisory/typo3-core-sa-2016-019" description: It has been discovered, that PHP exposes the risk of Environment Variable Injection and TYPO3 is vulnerable through third party library guzzlehttp/guzzle 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-2016-019: Environment Variable Injection - [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-2016-019: Environment Variable Injection ====================================================== 19 July 2016 ![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 PHP exposes the risk of Environment Variable Injection and TYPO3 is vulnerable through third party library guzzlehttp/guzzle - ![](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:** July 19, 2016 **Vulnerability Type:** Environment Variable Injection **Affected Versions:** Versions 8.0.0 to 8.2.0 **Severity:** Low **related CVE:** [CVE-2016-5385](https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-5385) **Problem Description:** PHP, when used as CGI, FPM or HHVM, exposes http headers also as environment variables starting with "HTTP\_". TYPO3 version 8.2.0 is vulnerable because it uses the third party library guzzlehttp/guzzlel, which makes use of the environment variable "HTTP\_PROXY". Read or for further details. **Solution:** Update to TYPO3 version 8.2.1 that fixes the problem described. **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)