{"action":"Upgrade @anthropic-ai/claude-code to 2.1.64 or later.","affected":[{"fixed":"2.1.64","introduced":"0"}],"component":"@anthropic-ai/claude-code","cve_ids":["CVE-2026-39861"],"ecosystem":"npm","epss":0.00711,"exploited":false,"fixed_versions":["2.1.64"],"ghsa_id":"GHSA-vp62-r36r-9xqp","id":"tcs_01M5KGCGVPQZ7JX20BTCX8HST6","modified_at":"2026-05-05T16:11:17.173956Z","published_at":"2026-04-21T18:51:21Z","references":["https://osv.dev/vulnerability/GHSA-vp62-r36r-9xqp","https://github.com/anthropics/claude-code/security/advisories/GHSA-vp62-r36r-9xqp","https://nvd.nist.gov/vuln/detail/CVE-2026-39861","https://github.com/anthropics/claude-code"],"severity":{"label":"critical","score":10},"sources":[{"source":"osv","source_id":"GHSA-vp62-r36r-9xqp","url":"https://osv.dev/vulnerability/GHSA-vp62-r36r-9xqp"}],"summary":"Claude Code: Sandbox Escape via Symlink Following Allows Arbitrary File Write Outside Workspace"}