{"title":"Django 3.1.9 release notes","version":"dev","locale":"en","docname":"releases/3.1.9","url":"/en/dev/releases/3.1.9/","canonical":"https://djangodocs.dev/en/dev/releases/3.1.9/","summary":"Django 3.1.9 fixes a security issue in 3.1.8. MultiPartParser, UploadedFile, and FieldFile allowed directory-traversal via uploaded files with suitably…","html":"<h1>Django 3.1.9 release notes<a class=\"heading-anchor\" href=\"#django-3-1-9-release-notes\"><span class=\"visually-hidden\">Link to this heading</span><span aria-hidden=\"true\">#</span></a></h1>\n<p><em>May 4, 2021</em></p>\n<p>Django 3.1.9 fixes a security issue in 3.1.8.</p>\n<section id=\"cve-2021-31542-potential-directory-traversal-via-uploaded-files\">\n<h2>CVE-2021-31542: Potential directory-traversal via uploaded files<a class=\"heading-anchor\" href=\"#cve-2021-31542-potential-directory-traversal-via-uploaded-files\"><span class=\"visually-hidden\">Link to this heading</span><span aria-hidden=\"true\">#</span></a></h2>\n<p><code class=\"docutils literal notranslate\">MultiPartParser</code>, <code class=\"docutils literal notranslate\">UploadedFile</code>, and <code class=\"docutils literal notranslate\">FieldFile</code> allowed\ndirectory-traversal via uploaded files with suitably crafted file names.</p>\n<p>In order to mitigate this risk, stricter basename and path sanitation is now\napplied.</p>\n</section>","rootId":"django-3-1-9-release-notes","toc":[{"title":"CVE-2021-31542: Potential directory-traversal via uploaded files","anchor":"cve-2021-31542-potential-directory-traversal-via-uploaded-files","children":[]}],"breadcrumbs":[{"docname":"releases/index","title":"Release notes","url":"/en/dev/releases/"}],"prev":{"docname":"releases/3.1.10","title":"Django 3.1.10 release notes","url":"/en/dev/releases/3.1.10/"},"next":{"docname":"releases/3.1.8","title":"Django 3.1.8 release notes","url":"/en/dev/releases/3.1.8/"},"formats":{"html":"/en/dev/releases/3.1.9/","markdown":"/en/dev/releases/3.1.9.md","json":"/en/dev/releases/3.1.9.json"},"source":"https://github.com/django/django/blob/main/docs/releases/3.1.9.txt","official":"https://docs.djangoproject.com/en/dev/releases/3.1.9/","inVersions":["dev","6.1","6.0","5.2","5.1","5.0","4.2","4.1","4.0","3.2","3.1"],"inLocales":["en"]}