{"id":"UBUNTU-CVE-2026-41051","details":"csync2 uses insecure temporary directories when compiled with C99 or later, allowing for TOCTOU style attacks on the temporary directories.","modified":"2026-05-20T22:03:00.318426019Z","published":"2026-05-13T13:01:00Z","upstream":["CVE-2026-41051"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-41051"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-41051"},{"type":"REPORT","url":"https://bugzilla.suse.com/show_bug.cgi?id=1262472"},{"type":"REPORT","url":"https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-41051"}],"affected":[{"package":{"name":"csync2","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/csync2?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0+73d3293-2","2.0+73d3293-2build1","2.0+73d3293-2build2"],"ecosystem_specific":{"binaries":[{"binary_name":"csync2","binary_version":"2.0+73d3293-2build2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41051.json"}},{"package":{"name":"csync2","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/csync2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0-8-g175a01c-4ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_version":"2.0-8-g175a01c-4ubuntu1","binary_name":"csync2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41051.json"}},{"package":{"name":"csync2","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/csync2?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0-8-g175a01c-4ubuntu2","2.0-22-gce67c55-1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"csync2","binary_version":"2.0-22-gce67c55-1ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41051.json"}},{"package":{"name":"csync2","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/csync2?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0-25-gc0faaf9-1"],"ecosystem_specific":{"binaries":[{"binary_name":"csync2","binary_version":"2.0-25-gc0faaf9-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41051.json"}},{"package":{"name":"csync2","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/csync2?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0-42-g83b3644-2","2.0-42-g83b3644-2build1","2.0-42-g83b3644-2build2","2.0-42-g83b3644-2build3"],"ecosystem_specific":{"binaries":[{"binary_name":"csync2","binary_version":"2.0-42-g83b3644-2build3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41051.json"}},{"package":{"name":"csync2","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/csync2?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0-42-g83b3644-2build3","2.0-42-g83b3644-3"],"ecosystem_specific":{"binaries":[{"binary_name":"csync2","binary_version":"2.0-42-g83b3644-3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41051.json"}},{"package":{"name":"csync2","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/csync2?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0-42-g83b3644-3","2.0-42-g83b3644-3build1","2.0-42-g83b3644-4"],"ecosystem_specific":{"binaries":[{"binary_name":"csync2","binary_version":"2.0-42-g83b3644-4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41051.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}