{"action":"Upgrade virtualenv to 1.5 or later.","affected":[{"fixed":"1.5","introduced":"0"}],"component":"virtualenv","cve_ids":["CVE-2011-4617"],"ecosystem":"PyPI","epss":0.0031,"exploited":false,"fixed_versions":["1.5"],"ghsa_id":"GHSA-3jhc-wjqf-5f2c","id":"tcs_01M5KG5HGRBG835FPVGAT8NJ02","modified_at":"2026-06-10T17:02:46.281359072Z","published_at":"2011-12-31T01:55:00Z","references":["https://osv.dev/vulnerability/PYSEC-2011-23","http://openwall.com/lists/oss-security/2011/12/19/5","http://openwall.com/lists/oss-security/2011/12/19/2","https://bitbucket.org/ianb/virtualenv/changeset/8be37c509fe5","http://openwall.com/lists/oss-security/2011/12/19/4","http://secunia.com/advisories/47240","http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071643.html","http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071638.html","https://github.com/advisories/GHSA-3jhc-wjqf-5f2c"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"PYSEC-2011-23","url":"https://osv.dev/vulnerability/PYSEC-2011-23"}],"summary":"virtualenv.py in virtualenv before 1.5 allows local users to overwrite arbitrary files via a symlink attack on a certain file in /tmp/."}