{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0","last_affected":"1.2.2"}],"component":"realms-shim","cve_ids":["CVE-2021-23543"],"ecosystem":"npm","epss":0.0182,"exploited":false,"fixed_versions":[],"ghsa_id":"GHSA-q4j7-v27r-fgcx","id":"tcs_01M5KG542E4ETQ6YVV16FGNA8G","modified_at":"2026-03-13T21:57:01.858728Z","published_at":"2022-01-13T15:00:36Z","references":["https://osv.dev/vulnerability/GHSA-q4j7-v27r-fgcx","https://nvd.nist.gov/vuln/detail/CVE-2021-23543","https://github.com/Agoric/realms-shim","https://snyk.io/vuln/SNYK-JS-REALMSSHIM-2309908","https://www.npmjs.com/package/realms-shim"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"GHSA-q4j7-v27r-fgcx","url":"https://osv.dev/vulnerability/GHSA-q4j7-v27r-fgcx"}],"summary":"Prototype Pollution in realms-shim"}