{"id":"UBUNTU-CVE-2026-8258","details":"A flaw has been found in Squirrel up to 3.2. Impacted is the function validate_format in the library sqstdlib/sqstdstring.cpp. Executing a manipulation can lead to stack-based buffer overflow. The attack can only be executed locally. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.","modified":"2026-06-24T11:00:37.690394135Z","published":"2026-05-11T02:16:00Z","upstream":["CVE-2026-8258"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-8258"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-8258"},{"type":"REPORT","url":"https://github.com/albertodemichelis/squirrel/issues/325"}],"affected":[{"package":{"name":"squirrel3","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/squirrel3?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1-4","3.1-5"],"ecosystem_specific":{"binaries":[{"binary_name":"libsquirrel3-0","binary_version":"3.1-5"},{"binary_name":"squirrel3","binary_version":"3.1-5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8258.json"}},{"package":{"name":"squirrel3","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/squirrel3?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1-8","3.1-8build1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.1-8build1","binary_name":"libsquirrel3-0"},{"binary_name":"squirrel3","binary_version":"3.1-8build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8258.json"}},{"package":{"name":"squirrel3","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/squirrel3?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1-8build1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.1-8build1","binary_name":"libsquirrel3-0"},{"binary_name":"squirrel3","binary_version":"3.1-8build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8258.json"}},{"package":{"name":"squirrel3","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/squirrel3?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1-8.2"],"ecosystem_specific":{"binaries":[{"binary_version":"3.1-8.2","binary_name":"libsquirrel3-0"},{"binary_name":"squirrel3","binary_version":"3.1-8.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8258.json"}},{"package":{"name":"squirrel3","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/squirrel3?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1-8.2","3.1-8.3"],"ecosystem_specific":{"binaries":[{"binary_version":"3.1-8.3","binary_name":"libsquirrel3-0"},{"binary_name":"squirrel3","binary_version":"3.1-8.3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8258.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"},{"type":"Ubuntu","score":"medium"}]}