{"id":"CVE-2023-5758","title":"When opening a page in reader mode, the redirect URL could have caused attacker-controlled script to execute in a reflected Cross-Site Scripting (XSS) attack","summary":"When opening a page in reader mode, the redirect URL could have caused attacker-controlled script to execute in a reflected Cross-Site Scripting (XSS) attack. This vulnerability affects Firefox for iOS < 119.","severity":"medium","cvss":6.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cwe":["CWE-79","CWE-79"],"vendor":"mozilla","product":"firefox_mobile","affected":["firefox_mobile < 119.0"],"patched":["firefox_mobile 119.0"],"published":"2023-10-25","updated":"2026-08-19","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-5758","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1850019","label":"security@mozilla.org"},{"url":"https://security.gentoo.org/glsa/202401-10","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2023-48/","label":"security@mozilla.org"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1850019","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/202401-10","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.mozilla.org/security/advisories/mfsa2023-48/","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00433,"epssPercentile":0.37082,"ingestedAt":"2026-08-19T15:41:16.020Z","slug":"CVE-2023-5758","body":"## Overview\n\nWhen opening a page in reader mode, the redirect URL could have caused attacker-controlled script to execute in a reflected Cross-Site Scripting (XSS) attack. This vulnerability affects Firefox for iOS < 119.\n\n## Affected\n\n- `firefox_mobile < 119.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `firefox_mobile 119.0`","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":33.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}