{"action":"Upgrade zrender to 4.3.3 or later.","affected":[{"fixed":"5.2.1","introduced":"5.0.0"},{"fixed":"4.3.3","introduced":"0"}],"component":"zrender","cve_ids":["CVE-2021-39227"],"ecosystem":"npm","epss":0.01266,"exploited":false,"fixed_versions":["5.2.1","4.3.3"],"ghsa_id":"GHSA-fhv8-fx5f-7fxf","id":"tcs_01M5KFNM43ZS29PHTQADP0AJQY","modified_at":"2026-07-08T06:28:58.491405487Z","published_at":"2021-09-20T19:53:15Z","references":["https://osv.dev/vulnerability/GHSA-fhv8-fx5f-7fxf","https://github.com/ecomfe/zrender/security/advisories/GHSA-fhv8-fx5f-7fxf","https://nvd.nist.gov/vuln/detail/CVE-2021-39227","https://github.com/ecomfe/zrender/pull/826","https://github.com/ecomfe/zrender","https://github.com/ecomfe/zrender/releases/tag/5.2.1"],"severity":{"label":"medium","score":6.2},"sources":[{"source":"osv","source_id":"GHSA-fhv8-fx5f-7fxf","url":"https://osv.dev/vulnerability/GHSA-fhv8-fx5f-7fxf"}],"summary":"Prototype Pollution in the merge and clone helper methods"}