{"id":"CVE-2021-43530","aliases":["EUVD-2021-30459","GHSA-mgfp-hcp6-39f4"],"status":"published","title":"A Universal XSS vulnerability was present in Firefox for Android resulting from improper...","description":"A Universal XSS vulnerability was present in Firefox for Android resulting from improper sanitization when processing a URL scanned from a QR code. *This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox \u003c 94.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01414,"percentile":0.72959,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-79"],"published":"2021-12-08T21:21:04Z","modified":"2026-06-17T04:11:04Z","exploits":[{"source":"pocgithub","id":"hfh86/CVE-2021-43530-UXSS-On-QRcode-Reader-","title":"hfh86/CVE-2021-43530-UXSS-On-QRcode-Reader-","date":"2022-03-22","url":"https://github.com/hfh86/CVE-2021-43530-UXSS-On-QRcode-Reader-"}],"products":[{"vendor":"mozilla","product":"firefox"}],"references":[{"url":"https://www.mozilla.org/security/advisories/mfsa2021-48/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1736886","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Permissions Required"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-43530"},{"url":"https://github.com/advisories/GHSA-mgfp-hcp6-39f4"}],"sources":{"cve":[{"id":"CVE-2021-43530","description":"A Universal XSS vulnerability was present in Firefox for Android resulting from improper sanitization when processing a URL scanned from a QR code. *This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox \u003c 94.","status":"published","published":"2021-12-08T21:21:04Z","modified":"2024-08-04T03:55:29.359Z","updated_at":"2026-11-02T14:32:57.033395Z"}],"euvd":[{"id":"EUVD-2021-30459","description":"A Universal XSS vulnerability was present in Firefox for Android resulting from improper sanitization when processing a URL scanned from a QR code. *This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox \u003c 94.","status":"published","published":"2021-12-08T21:21:04Z","modified":"2024-08-04T03:55:29Z","updated_at":"2026-11-03T03:24:13.772922Z"}],"ghsa":[{"id":"GHSA-mgfp-hcp6-39f4","title":"A Universal XSS vulnerability was present in Firefox for Android resulting from improper...","description":"A Universal XSS vulnerability was present in Firefox for Android resulting from improper sanitization when processing a URL scanned from a QR code. *This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox \u003c 94.","status":"published","published":"2021-12-09T00:00:21Z","modified":"2023-02-01T05:06:41Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:50:24.014737Z"}],"nvd":[{"id":"CVE-2021-43530","description":"A Universal XSS vulnerability was present in Firefox for Android resulting from improper sanitization when processing a URL scanned from a QR code. *This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox \u003c 94.","status":"published","published":"2021-12-08T22:15:09.257Z","modified":"2026-06-17T04:11:04.657Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:07:02.189991Z"}]}}