{"id":"UBUNTU-CVE-2026-86469","details":"A flaw was found in GLib2. When g_file_replace() is used with G_FILE_CREATE_REPLACE_DESTINATION and creating the .goutputstream-XXXXXX temporary file fails, the library unlinks the destination and recreates it without exclusive creation or symlink protection. A local attacker who can write to the destination directory can win that race and redirect the write to another file.","modified":"2026-09-21T21:40:32.948686250Z","published":"2026-09-07T16:17:00Z","upstream":["CVE-2026-86469"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-86469"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-86469"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2473839"},{"type":"REPORT","url":"https://gitlab.gnome.org/GNOME/glib/-/work_items/4044"}],"affected":[{"package":{"name":"glib2.0","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/glib2.0?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.38.0-1ubuntu1","2.38.1-1","2.39.1-0ubuntu1","2.39.1-0ubuntu2","2.39.1-0ubuntu3","2.39.2-0ubuntu1","2.39.2-0ubuntu2","2.39.3-0ubuntu4","2.39.4-0ubuntu1","2.39.90-0ubuntu1","2.39.91-0ubuntu2","2.39.91-0ubuntu3","2.39.92-2","2.40.0-1","2.40.0-1ubuntu1","2.40.0-2","2.40.2-0ubuntu1","2.40.2-0ubuntu1.1","2.40.2-0ubuntu1.1+esm1","2.40.2-0ubuntu1.1+esm2","2.40.2-0ubuntu1.1+esm3","2.40.2-0ubuntu1.1+esm4","2.40.2-0ubuntu1.1+esm6","2.40.2-0ubuntu1.1+esm7","2.40.2-0ubuntu1.1+esm8"],"ecosystem_specific":{"binaries":[{"binary_name":"libglib2.0-0","binary_version":"2.40.2-0ubuntu1.1+esm8"},{"binary_version":"2.40.2-0ubuntu1.1+esm8","binary_name":"libglib2.0-0-refdbg"},{"binary_version":"2.40.2-0ubuntu1.1+esm8","binary_name":"libglib2.0-bin"},{"binary_version":"2.40.2-0ubuntu1.1+esm8","binary_name":"libglib2.0-data"},{"binary_version":"2.40.2-0ubuntu1.1+esm8","binary_name":"libglib2.0-tests"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-86469.json"}},{"package":{"name":"glib2.0","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/glib2.0?arch=source&distro=esm-infra-legacy%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.46.1-1","2.46.1-2","2.47.1-1","2.47.3-3","2.47.4-1","2.47.5-1","2.47.6-1","2.48.0-1ubuntu3","2.48.0-1ubuntu4","2.48.1-1~ubuntu16.04.1","2.48.2-0ubuntu1","2.48.2-0ubuntu3","2.48.2-0ubuntu4","2.48.2-0ubuntu4.1","2.48.2-0ubuntu4.2","2.48.2-0ubuntu4.3","2.48.2-0ubuntu4.4","2.48.2-0ubuntu4.5","2.48.2-0ubuntu4.6","2.48.2-0ubuntu4.7","2.48.2-0ubuntu4.8","2.48.2-0ubuntu4.8+esm1","2.48.2-0ubuntu4.8+esm3","2.48.2-0ubuntu4.8+esm4","2.48.2-0ubuntu4.8+esm5","2.48.2-0ubuntu4.8+esm6"],"ecosystem_specific":{"binaries":[{"binary_name":"libglib2.0-0","binary_version":"2.48.2-0ubuntu4.8+esm6"},{"binary_name":"libglib2.0-0-refdbg","binary_version":"2.48.2-0ubuntu4.8+esm6"},{"binary_name":"libglib2.0-bin","binary_version":"2.48.2-0ubuntu4.8+esm6"},{"binary_name":"libglib2.0-data","binary_version":"2.48.2-0ubuntu4.8+esm6"},{"binary_version":"2.48.2-0ubuntu4.8+esm6","binary_name":"libglib2.0-tests"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-86469.json"}},{"package":{"name":"glib2.0","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/glib2.0?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.54.1-1ubuntu1","2.55.2-2ubuntu1","2.56.0-2ubuntu1","2.56.0-4ubuntu1","2.56.1-2ubuntu1","2.56.2-0ubuntu0.18.04.1","2.56.2-0ubuntu0.18.04.2","2.56.3-0ubuntu0.18.04.1","2.56.4-0ubuntu0.18.04.2","2.56.4-0ubuntu0.18.04.3","2.56.4-0ubuntu0.18.04.4","2.56.4-0ubuntu0.18.04.5","2.56.4-0ubuntu0.18.04.6","2.56.4-0ubuntu0.18.04.7","2.56.4-0ubuntu0.18.04.8","2.56.4-0ubuntu0.18.04.9","2.56.4-0ubuntu0.18.04.9+esm3","2.56.4-0ubuntu0.18.04.9+esm4","2.56.4-0ubuntu0.18.04.9+esm5","2.56.4-0ubuntu0.18.04.9+esm6"],"ecosystem_specific":{"binaries":[{"binary_name":"libglib2.0-0","binary_version":"2.56.4-0ubuntu0.18.04.9+esm6"},{"binary_name":"libglib2.0-bin","binary_version":"2.56.4-0ubuntu0.18.04.9+esm6"},{"binary_name":"libglib2.0-data","binary_version":"2.56.4-0ubuntu0.18.04.9+esm6"},{"binary_name":"libglib2.0-dev-bin","binary_version":"2.56.4-0ubuntu0.18.04.9+esm6"},{"binary_version":"2.56.4-0ubuntu0.18.04.9+esm6","binary_name":"libglib2.0-tests"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-86469.json"}},{"package":{"name":"glib2.0","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/glib2.0?arch=source&distro=esm-infra%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.62.1-1","2.63.1-2","2.63.1-2ubuntu1","2.63.3-1","2.63.3-3","2.63.5-2","2.64.0-1","2.64.1-1","2.64.2-1~fakesync1","2.64.3-1~ubuntu20.04.1","2.64.6-1~ubuntu20.04.1","2.64.6-1~ubuntu20.04.2","2.64.6-1~ubuntu20.04.3","2.64.6-1~ubuntu20.04.4","2.64.6-1~ubuntu20.04.6","2.64.6-1~ubuntu20.04.7","2.64.6-1~ubuntu20.04.8","2.64.6-1~ubuntu20.04.9","2.64.6-1~ubuntu20.04.9+esm1","2.64.6-1~ubuntu20.04.9+esm2"],"ecosystem_specific":{"binaries":[{"binary_version":"2.64.6-1~ubuntu20.04.9+esm2","binary_name":"libglib2.0-0"},{"binary_version":"2.64.6-1~ubuntu20.04.9+esm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