{"action":"Upgrade mongo-express to 1.0.0-alpha.4 or later.","affected":[{"fixed":"1.0.0-alpha.4","introduced":"0"}],"component":"mongo-express","cve_ids":["CVE-2021-21422"],"ecosystem":"npm","epss":0.0157,"exploited":false,"fixed_versions":["1.0.0-alpha.4"],"ghsa_id":"GHSA-7p8h-86p5-wv3p","id":"tcs_01M5KFAH8HTAYAM41BV99QZTXA","modified_at":"2026-07-08T06:29:33.325350636Z","published_at":"2021-06-28T17:18:04Z","references":["https://osv.dev/vulnerability/GHSA-7p8h-86p5-wv3p","https://github.com/mongo-express/mongo-express/security/advisories/GHSA-7p8h-86p5-wv3p","https://nvd.nist.gov/vuln/detail/CVE-2021-21422","https://github.com/mongo-express/mongo-express/issues/577","https://github.com/mongo-express/mongo-express/commit/f5e0d4931f856f032f22664b5e5901d5950cfd4b"],"severity":{"label":"high","score":8.1},"sources":[{"source":"osv","source_id":"GHSA-7p8h-86p5-wv3p","url":"https://osv.dev/vulnerability/GHSA-7p8h-86p5-wv3p"}],"summary":"Cross-site scripting"}