{"action":"Upgrade xgrammar to 0.1.18 or later.","affected":[{"fixed":"0.1.18","introduced":"0"}],"component":"xgrammar","cve_ids":["CVE-2025-32381"],"ecosystem":"PyPI","epss":0.00517,"exploited":false,"fixed_versions":["0.1.18"],"ghsa_id":"GHSA-389x-67px-mjg3","id":"tcs_01M5KGPBRZN65ZF40RBQ8YM21Z","modified_at":"2026-05-20T09:19:24.371536Z","published_at":"2025-04-09T16:15:26.210Z","references":["https://osv.dev/vulnerability/PYSEC-2025-235","https://github.com/mlc-ai/xgrammar/security/advisories/GHSA-389x-67px-mjg3","https://github.com/mlc-ai/xgrammar/pull/243","https://github.com/vllm-project/vllm/pull/16283"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"PYSEC-2025-235","url":"https://osv.dev/vulnerability/PYSEC-2025-235"}],"summary":"XGrammar is an open-source library for efficient, flexible, and portable structured generation. Prior to 0.1.18, Xgrammar includes a cache for compiled grammars to increase performance with repeated u"}