{"id":"CVE-2020-6830","title":"For native-to-JS bridging, the app requires a unique token to be passed that ensures non-app code can't call the bridging functions","summary":"For native-to-JS bridging, the app requires a unique token to be passed that ensures non-app code can't call the bridging functions. That token was being used for JS-to-native also, but it isn't needed in this case, and its usage was als…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-200"],"vendor":"mozilla","product":"firefox_mobile","affected":["firefox_mobile < 25.0"],"patched":["firefox_mobile 25.0"],"published":"2020-05-26","updated":"2026-08-19","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2020-6830","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1632387","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2020-15/","label":"security@mozilla.org"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1632387","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.mozilla.org/security/advisories/mfsa2020-15/","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00903,"epssPercentile":0.57736,"ingestedAt":"2026-08-19T15:41:14.003Z","slug":"CVE-2020-6830","body":"## Overview\n\nFor native-to-JS bridging, the app requires a unique token to be passed that ensures non-app code can't call the bridging functions. That token was being used for JS-to-native also, but it isn't needed in this case, and its usage was also leaking this token. This vulnerability affects Firefox for iOS < 25.\n\n## Affected\n\n- `firefox_mobile < 25.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `firefox_mobile 25.0`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}