{"id":"CVE-2026-2634","aliases":["EUVD-2026-8446","GHSA-gwgg-r543-4wvw","UBUNTU-CVE-2026-2634"],"status":"published","title":"Spoofed web content presented under trusted domains using scripted navigation on Firefox iOS","description":"Malicious scripts could cause desynchronization between the address bar and web content before a response is received in Firefox iOS, allowing attacker-controlled pages to be presented under spoofed domains. This vulnerability was fixed in Firefox for iOS 147.4.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00358,"percentile":0.29795,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-451"],"published":"2026-02-24T13:33:24Z","modified":"2026-10-28T20:16:02Z","affected":[{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"mozjs52","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["52.3.1-0ubuntu3","52.3.1-7fakesync1","52.8.1-0ubuntu0.18.04.1","52.9.1-0ubuntu0.18.04.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"mozjs68","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["68.5.0-1~fakesync","68.5.0-2~fakesync","68.6.0-1","68.6.0-1ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"mozjs52","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["52.9.1-1build1","52.9.1-1ubuntu3"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"mozjs102","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["102.11.0-0ubuntu0.22.04.1","102.12.0-0ubuntu0.22.04.1","102.13.0-0ubuntu0.22.04.1","102.15.1-0ubuntu0.22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"mozjs78","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["78.13.0-1","78.15.0-2","78.15.0-4ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"mozjs91","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["91.5.1-0ubuntu1","91.6.0-1","91.6.0-2","91.7.0-2","91.10.0-0ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"mozjs102","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["102.15.1-1","102.15.1-3ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"mozjs115","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["115.3.0-0ubuntu1","115.4.0-2","115.5.0-1","115.6.0-1","115.7.0-4","115.8.0-1","115.9.0-1","115.9.0-1build1","115.10.0-1"]}],"products":[{"vendor":"mozilla","product":"firefox"},{"vendor":"mozilla","product":"firefox for ios"}],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1975529","tags":["Issue Tracking","Permissions Required","report"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-12/","tags":["Vendor Advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-2634"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-12"},{"url":"https://github.com/advisories/GHSA-gwgg-r543-4wvw"},{"url":"https://ubuntu.com/security/CVE-2026-2634","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-2634","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-2634","title":"Spoofed web content presented under trusted domains using scripted navigation on Firefox iOS","description":"Malicious scripts could cause desynchronization between the address bar and web content before a response is received in Firefox iOS, allowing attacker-controlled pages to be presented under spoofed domains. This vulnerability was fixed in Firefox for iOS 147.4.","status":"published","published":"2026-02-24T13:33:24.725Z","modified":"2026-04-13T13:53:52.498Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-451"],"updated_at":"2026-11-02T13:48:46.911326Z"}],"euvd":[{"id":"EUVD-2026-8446","description":"Malicious scripts could cause desynchronization between the address bar and web content before a response is received in Firefox iOS, allowing attacker-controlled pages to be presented under spoofed domains. This vulnerability was fixed in Firefox for iOS 147.4.","status":"published","published":"2026-02-24T13:33:24Z","modified":"2026-04-13T13:53:52Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T19:24:28.856779Z"}],"ghsa":[{"id":"GHSA-gwgg-r543-4wvw","title":"Malicious scripts could cause desynchronization between the address bar and web content before a...","description":"Malicious scripts could cause desynchronization between the address bar and web content before a response is received in Firefox iOS, allowing attacker-controlled pages to be presented under spoofed domains. This vulnerability affects Firefox for iOS \u003c 147.4.","status":"published","published":"2026-02-24T15:30:31Z","modified":"2026-02-27T21:31:19Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-451"],"updated_at":"2026-11-02T15:06:24.663603Z"}],"nvd":[{"id":"CVE-2026-2634","description":"Malicious scripts could cause desynchronization between the address bar and web content before a response is received in Firefox iOS, allowing attacker-controlled pages to be presented under spoofed domains. This vulnerability was fixed in Firefox for iOS 147.4.","status":"published","published":"2026-02-24T14:16:23.81Z","modified":"2026-06-17T10:31:26.283Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-451"],"updated_at":"2026-11-02T14:12:06.63895Z"}],"osv":[{"id":"UBUNTU-CVE-2026-2634","description":"Malicious scripts could cause desynchronization between the address bar and web content before a response is received in Firefox iOS, allowing attacker-controlled pages to be presented under spoofed domains. This vulnerability was fixed in Firefox for iOS 147.4.","status":"published","published":"2026-02-24T14:16:00Z","modified":"2026-10-28T20:16:02.325119001Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T16:56:08.726452Z"}]}}