{"id":"CVE-2026-111297","kind":"vulnerability","aliases":["CVE-2026-111297"],"related":[],"title":"Microsoft SharePoint: cross-site scripting lets an authorized user spoof pages","description":"Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.","summary":"Microsoft Office SharePoint does not neutralize input when it generates web pages, which is a cross-site scripting flaw. An attacker with a valid account can perform spoofing over the network.","severity":"high","cvss":8.0,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"Microsoft Office SharePoint","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["microsoft","on-premises","sharepoint","vendor"],"not_affected_if":["sharepoint-online"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:18:27+00:00","first_seen_at":"2026-11-10T19:24:28+00:00","triaged_at":"2026-11-10T19:36:14+00:00","updated_at":"2026-11-10T19:36:14+00:00","category":"vendor","confidence":0.5,"triage":{"at":"2026-11-10T19:36:14Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"Microsoft SharePoint: cross-site scripting lets an authorized user spoof pages","impact":"medium","summary":"Microsoft Office SharePoint does not neutralize input when it generates web pages, which is a cross-site scripting flaw. An attacker with a valid account can perform spoofing over the network.","audience":"businesses","category":"vendor","nicknames":[],"who_cares":["sharepoint","on-premises","microsoft"],"confidence":0.5,"fix_status":"unknown","needs_auth":"yes","worst_case":"Attacker spoofs SharePoint pages to users over the network","analyst_note":"Find the affected SharePoint versions, the Microsoft security update and the fixed build in the MSRC advisory for CVE-2026-111297; the sources only give the NVD description.","how_to_check":"unknown","plain_action":"","product_name":"Microsoft Office SharePoint","needs_analyst":true,"not_affected_if":["sharepoint-online"],"who_is_affected":"Organizations running Microsoft Office SharePoint on-premises, where users with a valid account can reach the affected pages over the network. The sources do not name the affected versions or configurations, so unknown whether SharePoint Online is involved.","user_interaction":"unknown","product_ecosystem":"vendor","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000696,"input_tokens":4510,"output_tokens":490,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Find the affected SharePoint versions, the Microsoft security update and the fixed build in the MSRC advisory for CVE-2026-111297; the sources only give the NVD description.","search":"'-111297':15A,18A '-2026':14A,17A 'account':53B 'allow':76C 'attack':49B,79C 'author':9A,78C 'cross':4A,44B,69C 'cross-sit':3A,43B,68C 'cve':13A,16A 'flaw':47B 'generat':37B,67C 'improp':60C 'input':34B,63C 'let':7A 'microsoft':1A,19A,22B,28B,73C 'network':59B,85C 'neutral':33B,61C 'offic':29B,74C 'office':20A 'on-premis':23B 'page':12A,39B,66C 'perform':55B,81C 'premis':25B 'script':6A,46B,71C 'sharepoint':2A,21A,26B,30B,75C 'site':5A,45B,70C 'spoof':11A,56B,82C 'user':10A 'valid':52B 'vendor':27B 'web':38B,65C","nicknames":[],"mitigations":[],"who_affected":"Organizations running Microsoft Office SharePoint on-premises, where users with a valid account can reach the affected pages over the network. The sources do not name the affected versions or configurations, so unknown whether SharePoint Online is involved.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":["microsoftofficesharepoint","officesharepoint"],"ptokens":["microsoft","office","sharepoint"],"labels":["high","microsoft","onpremises","sharepoint","vendor"],"campaign_type":null,"search_a":"'-111297':15A,18A '-2026':14A,17A 'author':9A 'cross':4A 'cross-sit':3A 'cve':13A,16A 'let':7A 'microsoft':1A,19A 'office':20A 'page':12A 'script':6A 'sharepoint':2A,21A 'site':5A 'spoof':11A 'user':10A","search_b":"'account':53B 'attack':49B 'cross':44B 'cross-sit':43B 'flaw':47B 'generat':37B 'input':34B 'microsoft':22B,28B 'network':59B 'neutral':33B 'offic':29B 'on-premis':23B 'page':39B 'perform':55B 'premis':25B 'script':46B 'sharepoint':26B,30B 'site':45B 'spoof':56B 'valid':52B 'vendor':27B 'web':38B","search_c":"'allow':76C 'attack':79C 'author':78C 'cross':69C 'cross-sit':68C 'generat':67C 'improp':60C 'input':63C 'microsoft':73C 'network':85C 'neutral':61C 'offic':74C 'page':66C 'perform':81C 'script':71C 'sharepoint':75C 'site':70C 'spoof':82C 'web':65C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:18:27+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-111297","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111297","severity":null,"published_at":"2026-11-10T19:18:27+00:00","modified_at":"2026-11-10T19:18:27+00:00","first_seen_at":"2026-11-10T19:24:28+00:00","fetched_at":"2026-11-10T19:24:28+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"}