{"action":"Upgrade parse-server to 8.6.3 or later.","affected":[{"fixed":"9.3.1-alpha.4","introduced":"9.0.0"},{"fixed":"8.6.3","introduced":"0"}],"component":"parse-server","cve_ids":["CVE-2026-27804"],"ecosystem":"npm","epss":0.00201,"exploited":false,"fixed_versions":["9.3.1-alpha.4","8.6.3"],"ghsa_id":"GHSA-4q3h-vp4r-prv2","id":"tcs_01M5KF14V9DKMHD5KZAZZASF82","modified_at":"2026-03-02T12:17:22.300541Z","published_at":"2026-02-25T23:00:49Z","references":["https://osv.dev/vulnerability/GHSA-4q3h-vp4r-prv2","https://github.com/parse-community/parse-server/security/advisories/GHSA-4q3h-vp4r-prv2","https://nvd.nist.gov/vuln/detail/CVE-2026-27804","https://github.com/parse-community/parse-server/commit/9b94083accb7f3e72c6b8126c195c7a03dd2dfd7","https://github.com/parse-community/parse-server/commit/9d5942d50e55c822924c27b05aa98f1393e7a330","https://github.com/parse-community/parse-server","https://github.com/parse-community/parse-server/releases/tag/8.6.3","https://github.com/parse-community/parse-server/releases/tag/9.3.1-alpha.4"],"severity":{"label":"critical","score":9.1},"sources":[{"source":"osv","source_id":"GHSA-4q3h-vp4r-prv2","url":"https://osv.dev/vulnerability/GHSA-4q3h-vp4r-prv2"},{"source":"nvd","source_id":"CVE-2026-27804","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27804"}],"summary":"Parse Server: Account takeover via JWT algorithm confusion in Google auth adapter"}