{"id":"UBUNTU-CVE-2026-100310","details":"GNU libextractor before 1.16 loads plugins from an untrusted search path specified by the LIBEXTRACTOR_PREFIX environment variable without proper privilege checks. A local attacker can exploit this by setting LIBEXTRACTOR_PREFIX to a directory containing a malicious plugin that executes arbitrary code with elevated privileges when loaded by a setuid or setgid program.","modified":"2026-09-30T21:41:52Z","published":"2026-09-25T20:17:00Z","upstream":["CVE-2026-100310"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-100310"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-100310"},{"type":"REPORT","url":"https://www.openwall.com/lists/oss-security/2026/09/25/25"},{"type":"REPORT","url":"https://github.com/Haitam-lazaar/libextractor-privesc"},{"type":"REPORT","url":"https://ftp.gnu.org/gnu/libextractor/"},{"type":"REPORT","url":"https://git.gnunet.org/gnunet/libextractor/commit/6edfa653c048800e24a17f7e8cc2bb42659b8d01.html"},{"type":"REPORT","url":"https://www.gnu.org/software/libextractor/"},{"type":"REPORT","url":"https://www.vulncheck.com/advisories/gnu-libextractor-before-1.16-privilege-escalation-via-libextractor-prefix"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2026/09/25/25"}],"affected":[{"package":{"name":"libextractor","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/libextractor?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.1-1ubuntu1","1:1.2-1ubuntu1","1:1.3-1","1:1.3-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"extract","binary_version":"1:1.3-1ubuntu0.1~esm1"},{"binary_name":"libextractor3","binary_version":"1:1.3-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-100310.json"}},{"package":{"name":"libextractor","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/libextractor?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.3-2build1","1:1.3-2ubuntu1","1:1.3-3","1:1.3-4+deb9u3build0.16.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"extract","binary_version":"1:1.3-4+deb9u3build0.16.04.1"},{"binary_version":"1:1.3-4+deb9u3build0.16.04.1","binary_name":"libextractor3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-100310.json"}},{"package":{"name":"libextractor","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/libextractor?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.3-4build3","1:1.6-1","1:1.6-1build1","1:1.6-2"],"ecosystem_specific":{"binaries":[{"binary_name":"extract","binary_version":"1:1.6-2"},{"binary_version":"1:1.6-2","binary_name":"libextractor3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-100310.json"}},{"package":{"name":"libextractor","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/libextractor?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.9-2","1:1.9-2ubuntu1","1:1.9-3"],"ecosystem_specific":{"binaries":[{"binary_name":"extract","binary_version":"1:1.9-3"},{"binary_version":"1:1.9-3","binary_name":"libextractor3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-100310.json"}},{"package":{"name":"libextractor","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libextractor?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.11-5"],"ecosystem_specific":{"binaries":[{"binary_name":"extract","binary_version":"1:1.11-5"},{"binary_name":"libextractor-plugin-archive","binary_version":"1:1.11-5"},{"binary_name":"libextractor-plugin-av","binary_version":"1:1.11-5"},{"binary_name":"libextractor-plugin-exiv2","binary_version":"1:1.11-5"},{"binary_version":"1:1.11-5","binary_name":"libextractor-plugin-flac"},{"binary_name":"libextractor-plugin-gif","binary_version":"1:1.11-5"},{"binary_name":"libextractor-plugin-gstreamer","binary_version":"1:1.11-5"},{"binary_version":"1:1.11-5","binary_name":"libextractor-plugin-html"},{"binary_name":"libextractor-plugin-jpeg","binary_version":"1:1.11-5"},{"binary_version":"1:1.11-5","binary_name":"libextractor-plugin-midi"},{"binary_name":"libextractor-plugin-mpeg","binary_version":"1:1.11-5"},{"binary_name":"libextractor-plugin-ogg","binary_version":"1:1.11-5"},{"binary_name":"libextractor-plugin-ole2","binary_version":"1:1.11-5"},{"binary_name":"libextractor-plugin-pdf","binary_version":"1:1.11-5"},{"binary_name":"libextractor-plugin-rpm","binary_version":"1:1.11-5"},{"binary_name":"libextractor-plugin-thumbnailgtk","binary_version":"1:1.11-5"},{"binary_name":"libextractor-plugin-tiff","binary_version":"1:1.11-5"},{"binary_name":"libextractor-plugins-all","binary_version":"1:1.11-5"},{"binary_name":"libextractor-plugins-misc","binary_version":"1:1.11-5"},{"binary_name":"libextractor3","binary_version":"1:1.11-5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-100310.json"}},{"pa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