{"action":"Upgrade mako to 1.4.2 or later.","affected":[{"fixed":"1.4.2","introduced":"0"}],"component":"mako","cve_ids":["CVE-2026-102991"],"ecosystem":"PyPI","epss":0.00356,"exploited":false,"fixed_versions":["1.4.2"],"ghsa_id":"GHSA-5639-2j2p-m4mx","id":"tcs_01M5KHATV7T2KYJH1TK8BK0YW2","modified_at":"2026-10-15T14:45:09.219391525Z","published_at":"2026-10-15T10:22:45.090602Z","references":["https://osv.dev/vulnerability/PYSEC-2026-4243","https://github.com/sqlalchemy/mako/security/advisories/GHSA-5639-2j2p-m4mx","https://nvd.nist.gov/vuln/detail/CVE-2026-102991","https://github.com/sqlalchemy/mako/issues/441","https://github.com/sqlalchemy/mako/commit/000ed85e4e48771eff460bf4fc721fb43de80e08","https://github.com/sqlalchemy/mako","https://github.com/sqlalchemy/mako/releases/tag/rel_1_4_2","https://pypi.org/project/mako","https://github.com/advisories/GHSA-5639-2j2p-m4mx"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"PYSEC-2026-4243","url":"https://osv.dev/vulnerability/PYSEC-2026-4243"}],"summary":"Mako: Path traversal via drive-letter URI on Windows in TemplateLookup"}