{"id":"UBUNTU-CVE-2025-22873","details":"It was possible to improperly access the parent directory of an os.Root by opening a filename ending in \"../\". For example, Root.Open(\"../\") would open the parent directory of the Root. This escape only permits opening the parent directory itself, not ancestors of the parent or files contained within the parent.","modified":"2026-05-20T16:20:49.761252587Z","published":"2026-02-04T23:15:00Z","upstream":["CVE-2025-22873"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-22873"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-22873"},{"type":"REPORT","url":"https://groups.google.com/g/golang-announce/c/UZoIkUT367A/m/5WDxKizJAQAJ"},{"type":"REPORT","url":"https://github.com/golang/go/issues/73555"},{"type":"REPORT","url":"https://github.com/golang/go/commit/8947f3395eb24dce6a5749517c0b40204b585f0a"}],"affected":[{"package":{"name":"golang-1.24","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/golang-1.24?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.24.4-1ubuntu1~22.04.1","1.24.4-1ubuntu1~22.04.2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.24.4-1ubuntu1~22.04.2","binary_name":"golang-1.24"},{"binary_name":"golang-1.24-go","binary_version":"1.24.4-1ubuntu1~22.04.2"},{"binary_name":"golang-1.24-src","binary_version":"1.24.4-1ubuntu1~22.04.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-22873.json"}},{"package":{"name":"golang-1.24","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/golang-1.24?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.24.4-1ubuntu1~24.04.1","1.24.4-1ubuntu1~24.04.2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.24.4-1ubuntu1~24.04.2","binary_name":"golang-1.24"},{"binary_name":"golang-1.24-go","binary_version":"1.24.4-1ubuntu1~24.04.2"},{"binary_name":"golang-1.24-src","binary_version":"1.24.4-1ubuntu1~24.04.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-22873.json"}},{"package":{"name":"golang-1.24","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/golang-1.24?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.24.2-1","1.24.2-2","1.24.4-1","1.24.4-1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.24.4-1ubuntu1","binary_name":"golang-1.24"},{"binary_version":"1.24.4-1ubuntu1","binary_name":"golang-1.24-go"},{"binary_name":"golang-1.24-src","binary_version":"1.24.4-1ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-22873.json"}},{"package":{"name":"golang-1.24","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/golang-1.24?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.24.4-1ubuntu1","1.24.9-1","1.24.13-2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.24.13-2","binary_name":"golang-1.24"},{"binary_name":"golang-1.24-go","binary_version":"1.24.13-2"},{"binary_name":"golang-1.24-src","binary_version":"1.24.13-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-22873.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}