{"id":"CVE-2026-116926","kind":"vulnerability","aliases":["CVE-2026-116926"],"related":[],"title":"Microsoft Teams: cross-site scripting lets an attacker spoof content over a network","description":"Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Teams allows an unauthorized attacker to perform spoofing over a network.","summary":"Microsoft Teams does not neutralize input when generating web pages, which is a cross-site scripting flaw. An unauthorized attacker on the network can perform spoofing through it.","severity":"high","cvss":7.5,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["microsoft-teams","vendor","web"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:19:20+00:00","first_seen_at":"2026-11-10T19:24:45+00:00","triaged_at":"2026-11-10T19:44:52+00:00","updated_at":"2026-11-10T19:44:52+00:00","category":"vendor","confidence":0.5,"triage":{"at":"2026-11-10T19:44:52Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"Microsoft Teams: cross-site scripting lets an attacker spoof content over a network","impact":"medium","summary":"Microsoft Teams does not neutralize input when generating web pages, which is a cross-site scripting flaw. An unauthorized attacker on the network can perform spoofing through it.","audience":"businesses","category":"vendor","nicknames":[],"who_cares":["microsoft-teams","web"],"confidence":0.5,"fix_status":"unknown","needs_auth":"unknown","worst_case":"attacker spoofs content inside Teams pages over the network","analyst_note":"Check the Microsoft Security Response Center entry for CVE-2026-116926 for affected builds, patch status and whether user interaction is required.","how_to_check":"unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":[],"who_is_affected":"unknown","user_interaction":"unknown","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000629,"input_tokens":4507,"output_tokens":357,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Check the Microsoft Security Response Center entry for CVE-2026-116926 for affected builds, patch status and whether user interaction is required.","search":"'-116926':17A,20A '-2026':16A,19A 'allow':68C 'attack':9A,46B,71C 'content':11A 'cross':4A,40B,62C 'cross-sit':3A,39B,61C 'cve':15A,18A 'flaw':43B 'generat':33B,60C 'improp':53C 'input':31B,56C 'let':7A 'microsoft':1A,22B,26B,66C 'microsoft-team':21B 'network':14A,49B,77C 'neutral':30B,54C 'page':35B,59C 'perform':51B,73C 'script':6A,42B,64C 'site':5A,41B,63C 'spoof':10A,52B,74C 'team':2A,23B,27B,67C 'unauthor':45B,70C 'vendor':24B 'web':25B,34B,58C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["high","microsoftteams","vendor","web"],"campaign_type":null,"search_a":"'-116926':17A,20A '-2026':16A,19A 'attack':9A 'content':11A 'cross':4A 'cross-sit':3A 'cve':15A,18A 'let':7A 'microsoft':1A 'network':14A 'script':6A 'site':5A 'spoof':10A 'team':2A","search_b":"'attack':46B 'cross':40B 'cross-sit':39B 'flaw':43B 'generat':33B 'input':31B 'microsoft':22B,26B 'microsoft-team':21B 'network':49B 'neutral':30B 'page':35B 'perform':51B 'script':42B 'site':41B 'spoof':52B 'team':23B,27B 'unauthor':45B 'vendor':24B 'web':25B,34B","search_c":"'allow':68C 'attack':71C 'cross':62C 'cross-sit':61C 'generat':60C 'improp':53C 'input':56C 'microsoft':66C 'network':77C 'neutral':54C 'page':59C 'perform':73C 'script':64C 'site':63C 'spoof':74C 'team':67C 'unauthor':70C 'web':58C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:19:20+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-116926","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116926","severity":null,"published_at":"2026-11-10T19:19:20+00:00","modified_at":"2026-11-10T19:19:20+00:00","first_seen_at":"2026-11-10T19:24:45+00:00","fetched_at":"2026-11-10T19:24:45+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"}