{"id":"CVE-2026-84127","aliases":["EUVD-2026-69076","GHSA-jvhv-r392-774p","UBUNTU-CVE-2026-84127","openSUSE-SU-2026:11677-1"],"status":"published","title":"Information disclosure in the WebExtensions component in Firefox for Android","description":"Information disclosure in the WebExtensions component in Firefox for Android. This vulnerability was fixed in Firefox 155.","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.00259,"percentile":0.17728,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-200"],"published":"2026-09-01T12:18:54Z","modified":"2026-10-28T02:30:49Z","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:18.04:LTS","package":"mozjs38","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["38.8.0~repack1-0ubuntu1","38.8.0~repack1-0ubuntu3","38.8.0~repack1-0ubuntu4"]},{"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:22.04:LTS","package":"thunderbird","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:91.1.2+build1-0ubuntu1","1:91.3.0+build2-0ubuntu1","1:91.3.1+build1-0ubuntu1","1:91.3.2+build1-0ubuntu1","1:91.4.0+build1.1-0ubuntu1","1:91.4.0+build2-0ubuntu1","1:91.5.0+build1-0ubuntu1","1:91.5.1+build1-0ubuntu1","1:91.6.1+build1-0ubuntu1","1:91.7.0+build1-0ubuntu1","1:91.7.0+build2-0ubuntu1","1:91.8.0+build2-0ubuntu1","1:91.9.1+build1-0ubuntu0.22.04.1","1:91.11.0+build2-0ubuntu0.22.04.1","1:102.2.2+build1-0ubuntu0.22.04.1","1:102.4.2+build2-0ubuntu0.22.04.1","1:102.7.1+build2-0ubuntu0.22.04.1","1:102.8.0+build2-0ubuntu0.22.04.1","1:102.9.0+build1-0ubuntu0.22.04.1","1:102.10.0+build2-0ubuntu0.22.04.1","1:102.11.0+build1-0ubuntu0.22.04.1","1:102.13.0+build1-0ubuntu0.22.04.1","1:102.15.0+build1-0ubuntu0.22.04.1","1:102.15.1+build1-0ubuntu0.22.04.1","1:115.3.1+build1-0ubuntu0.22.04.2","1:115.4.1+build1-0ubuntu0.22.04.1","1:115.5.0+build1-0ubuntu0.22.04.1","1:115.6.0+build2-0ubuntu0.22.04.1","1:115.8.1+build1-0ubuntu0.22.04.1","1:115.9.0+build1-0ubuntu0.22.04.1","1:115.10.1+build1-0ubuntu0.22.04.1","1:115.11.0+build2-0ubuntu0.22.04.1","1:115.12.0+build3-0ubuntu0.22.04.1","1:115.13.0+build5-0ubuntu0.22.04.1","1:115.15.0+build1-0ubuntu0.22.04.1","1:115.16.0+build2-0ubuntu0.22.04.1","1:115.18.0+build1-0ubuntu0.22.04.1","1:128.12.0+build1-0ubuntu0.22.04.1","1:140.7.1+build1-0ubuntu0.22.04.1"]},{"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"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"MozillaFirefox","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"155.0-1.1"}]}],"bundled":29}],"products":[{"vendor":"mozilla","product":"firefox"},{"vendor":"mozilla","product":"firefox_mobile"}],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1699444","tags":["Issue Tracking","Exploit","report"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-82/","tags":["Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-84127","tags":["advisory"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-82"},{"url":"https://github.com/advisories/GHSA-jvhv-r392-774p"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84127.json","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-84127","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-84127","tags":["report"]},{"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2026-82/#CVE-2026-84127","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84117","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84118","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84119","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84120","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84121","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84122","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84123","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84124","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84125","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84126","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84127","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84128","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84129","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84130","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84131","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84132","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84133","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84134","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84135","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84136","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84137","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84138","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84139","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84140","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84141","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84142","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84143","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84144","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-84145","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-84127","title":"Information disclosure in the WebExtensions component in Firefox for Android","description":"Information disclosure in the WebExtensions component in Firefox for Android. 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This vulnerability was fixed in Firefox 155.","status":"published","published":"2026-09-01T15:31:08Z","modified":"2026-09-01T15:31:08Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T15:11:13.213599Z"}],"nvd":[{"id":"CVE-2026-84127","description":"Information disclosure in the WebExtensions component in Firefox for Android. This vulnerability was fixed in Firefox 155.","status":"published","published":"2026-09-01T13:20:06.64Z","modified":"2026-09-03T13:00:40.473Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:12:43.04945Z"}],"osv":[{"id":"CVE-2026-84127","title":"Information disclosure in the WebExtensions component in Firefox for Android","description":"Information disclosure in the WebExtensions component in Firefox for Android. 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This vulnerability was fixed in Firefox 155.","status":"published","published":"2026-09-01T13:20:00Z","modified":"2026-09-16T14:03:43.933952549Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T16:57:22.213888Z"},{"id":"openSUSE-SU-2026:11677-1","title":"MozillaFirefox-155.0-1.1 on GA media","description":"These are all security issues fixed in the MozillaFirefox-155.0-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-09-04T00:00:00Z","modified":"2026-09-05T09:45:04.484252313Z","updated_at":"2026-11-02T16:58:39.516824Z"}]}}