{"action":"Upgrade github.com/kcp-dev/kcp to 0.29.3 or later.","affected":[{"fixed":"0.29.3","introduced":"0"},{"fixed":"0.30.3","introduced":"0.30.0"}],"component":"github.com/kcp-dev/kcp","cve_ids":["CVE-2026-39429"],"ecosystem":"Go","epss":0.00443,"exploited":false,"fixed_versions":["0.29.3","0.30.3"],"ghsa_id":"GHSA-3j3q-wp9x-585p","id":"tcs_01M5KGHS0YDB7QXQYWQ6VVXFEV","modified_at":"2026-07-16T21:10:54.281485498Z","published_at":"2026-06-25T18:26:48Z","references":["https://osv.dev/vulnerability/GO-2026-5088","https://github.com/kcp-dev/kcp/security/advisories/GHSA-3j3q-wp9x-585p","https://nvd.nist.gov/vuln/detail/CVE-2026-39429","https://github.com/kcp-dev/kcp/releases/tag/v0.29.3","https://github.com/kcp-dev/kcp/releases/tag/v0.30.3"],"severity":{"label":"critical","score":9.1},"sources":[{"source":"osv","source_id":"GO-2026-5088","url":"https://osv.dev/vulnerability/GO-2026-5088"},{"source":"nvd","source_id":"CVE-2026-39429","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39429"}],"summary":"kcp's cache server is accessible without authentication or authorization checks in github.com/kcp-dev/kcp"}