{"id":"UBUNTU-CVE-2025-2123","details":"A vulnerability, which was classified as problematic, has been found in GeSHi up to 1.0.9.1. Affected by this issue is the function get_var of the file /contrib/cssgen.php of the component CSS Handler. The manipulation of the argument default-styles/keywords-1/keywords-2/keywords-3/keywords-4/comments leads to cross site scripting. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.","modified":"2026-05-20T16:20:24.421248401Z","published":"2025-03-09T15:15:00Z","upstream":["CVE-2025-2123"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-2123"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-2123"},{"type":"REPORT","url":"https://github.com/GeSHi/geshi-1.0/issues/159#issue-2880408694"},{"type":"REPORT","url":"https://vuldb.com/?ctiid.299036"},{"type":"REPORT","url":"https://vuldb.com/?id.299036"},{"type":"REPORT","url":"https://vuldb.com/?submit.507418"}],"affected":[{"package":{"name":"geshi","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/geshi?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.8.11-2","1.0.8.11-2ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"php-geshi","binary_version":"1.0.8.11-2ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-2123.json"}},{"package":{"name":"geshi","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/geshi?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.8.11-2.1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.0.8.11-2.1","binary_name":"php-geshi"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-2123.json"}},{"package":{"name":"geshi","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/geshi?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.8.11-3"],"ecosystem_specific":{"binaries":[{"binary_name":"php-geshi","binary_version":"1.0.8.11-3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-2123.json"}},{"package":{"name":"geshi","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/geshi?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.9.1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"php-geshi","binary_version":"1.0.9.1-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-2123.json"}},{"package":{"name":"geshi","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/geshi?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.9.1-1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.0.9.1-1","binary_name":"php-geshi"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-2123.json"}},{"package":{"name":"geshi","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/geshi?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.9.1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"php-geshi","binary_version":"1.0.9.1-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-2123.json"}},{"package":{"name":"geshi","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/geshi?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.9.1-1","1.0.9.1-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"php-geshi","binary_version":"1.0.9.1-1build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-2123.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}