{"action":"Upgrade fonttools to 4.60.2 or later.","affected":[{"fixed":"4.60.2","introduced":"4.33.0"}],"component":"fonttools","cve_ids":["CVE-2025-66034"],"ecosystem":"PyPI","epss":0.00547,"exploited":false,"fixed_versions":["4.60.2"],"ghsa_id":"GHSA-768j-98cg-p3fv","id":"tcs_01M5KF53QZ75EFE0SET3F3MTCR","modified_at":"2026-09-10T03:50:31.754255627Z","published_at":"2025-12-01T19:07:00Z","references":["https://osv.dev/vulnerability/GHSA-768j-98cg-p3fv","https://github.com/fonttools/fonttools/security/advisories/GHSA-768j-98cg-p3fv","https://nvd.nist.gov/vuln/detail/CVE-2025-66034","https://github.com/fonttools/fonttools/commit/a696d5ba93270d5954f98e7cab5ddca8a02c1e32","https://github.com/fonttools/fonttools"],"severity":{"label":"medium","score":6.3},"sources":[{"source":"osv","source_id":"GHSA-768j-98cg-p3fv","url":"https://osv.dev/vulnerability/GHSA-768j-98cg-p3fv"}],"summary":"fontTools is Vulnerable to Arbitrary File Write and XML injection in fontTools.varLib"}