{"id":"CVE-2026-124934","kind":"vulnerability","aliases":["CVE-2026-124934"],"related":[],"title":"Firefox: Security component spoofing flaw fixed in Firefox 160","description":"Spoofing issue in the Security component. This vulnerability was fixed in Firefox 160 and Firefox ESR 153.7.","summary":"Mozilla fixed a spoofing issue in the Security component of Firefox, which can be used to make a user see or trust misleading content. The sources give no further detail on what an attacker can display or how it is triggered.","severity":"unknown","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browsers","firefox","other"],"not_affected_if":["already-updated"],"how_to_check":"- Check the installed Firefox version in the Help menu (About Firefox) or with `firefox --version`\n- Compare against the fixed versions `160` and ESR `153.7`","fix":"- Firefox: `160`\n- Firefox ESR: `153.7`","status":"open","published_at":"2026-11-10T14:17:27+00:00","first_seen_at":"2026-11-10T14:22:19+00:00","triaged_at":"2026-11-10T14:24:13+00:00","updated_at":"2026-11-10T14:24:13+00:00","category":"other","confidence":0.5,"triage":{"at":"2026-11-10T14:24:13Z","model":"claude-haiku-5-5","output":{"fix":"- Firefox: `160`\n- Firefox ESR: `153.7`","reach":"unknown","title":"Firefox: Security component spoofing flaw fixed in Firefox 160","impact":"low","summary":"Mozilla fixed a spoofing issue in the Security component of Firefox, which can be used to make a user see or trust misleading content. The sources give no further detail on what an attacker can display or how it is triggered.","audience":"everyone","category":"other","nicknames":[],"who_cares":["firefox","browsers"],"confidence":0.5,"fix_status":"available","needs_auth":"unknown","worst_case":"unknown","analyst_note":"Ideally confirm the attack scenario and impact from the Mozilla advisory, which the sources do not link.","how_to_check":"- Check the installed Firefox version in the Help menu (About Firefox) or with `firefox --version`\n- Compare against the fixed versions `160` and ESR `153.7`","plain_action":"Update Firefox to version 160 or Firefox ESR to 153.7 through the browser's update settings.","product_name":"","needs_analyst":false,"not_affected_if":["already-updated"],"who_is_affected":"Any installed Firefox or Firefox ESR build older than the fixed versions is affected; the sources do not describe the specific trigger or configuration. unknown","user_interaction":"unknown","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000694,"input_tokens":4464,"output_tokens":496,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-124934':12A,15A '-2026':11A,14A '153.7':75C '160':9A,71C 'attack':51B 'browser':16B 'compon':3A,26B,64C 'content':41B 'cve':10A,13A 'detail':47B 'display':53B 'esr':74C 'firefox':1A,8A,17B,28B,70C,73C 'fix':6A,19B,68C 'flaw':5A 'give':44B 'issu':22B,60C 'make':34B 'mislead':40B 'mozilla':18B 'secur':2A,25B,63C 'see':37B 'sourc':43B 'spoof':4A,21B,59C 'trigger':58B 'trust':39B 'use':32B 'user':36B 'vulner':66C","nicknames":[],"mitigations":[],"who_affected":"Any installed Firefox or Firefox ESR build older than the fixed versions is affected; the sources do not describe the specific trigger or configuration. unknown","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"everyone","plain_action":"Update Firefox to version 160 or Firefox ESR to 153.7 through the browser's update settings.","pkeys":[],"ptokens":[],"labels":["browsers","firefox","other","unknown"],"campaign_type":null,"search_a":"'-124934':12A,15A '-2026':11A,14A '160':9A 'compon':3A 'cve':10A,13A 'firefox':1A,8A 'fix':6A 'flaw':5A 'secur':2A 'spoof':4A","search_b":"'attack':51B 'browser':16B 'compon':26B 'content':41B 'detail':47B 'display':53B 'firefox':17B,28B 'fix':19B 'give':44B 'issu':22B 'make':34B 'mislead':40B 'mozilla':18B 'secur':25B 'see':37B 'sourc':43B 'spoof':21B 'trigger':58B 'trust':39B 'use':32B 'user':36B","search_c":"'153.7':75C '160':71C 'compon':64C 'esr':74C 'firefox':70C,73C 'fix':68C 'issu':60C 'secur':63C 'spoof':59C 'vulner':66C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T14:17:27+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-124934","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-124934","severity":null,"published_at":"2026-11-10T14:17:27+00:00","modified_at":"2026-11-10T14:17:27+00:00","first_seen_at":"2026-11-10T14:22:19+00:00","fetched_at":"2026-11-10T14:22:19+00:00","note":null}],"documents":[],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}