{"id":"CVE-2026-109502","kind":"vulnerability","aliases":["CVE-2026-109502"],"related":[],"title":"Microsoft SharePoint: server-side request forgery lets authorized users gain privileges","description":"Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.","summary":"A server-side request forgery flaw in Microsoft Office SharePoint lets an attacker who already has a valid account make the server send requests to internal addresses. The sources say this lets the attacker elevate privileges over the network.","severity":"high","cvss":8.8,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"Microsoft Office SharePoint","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["microsoft-office","other","self-hosted","sharepoint","windows"],"not_affected_if":["unknown"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:18:19+00:00","first_seen_at":"2026-11-10T19:24:26+00:00","triaged_at":"2026-11-10T19:33:53+00:00","updated_at":"2026-11-10T19:33:53+00:00","category":"other","confidence":0.5,"triage":{"at":"2026-11-10T19:33:53Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"Microsoft SharePoint: server-side request forgery lets authorized users gain privileges","impact":"high","summary":"A server-side request forgery flaw in Microsoft Office SharePoint lets an attacker who already has a valid account make the server send requests to internal addresses. The sources say this lets the attacker elevate privileges over the network.","audience":"businesses","category":"other","nicknames":[],"who_cares":["sharepoint","microsoft-office","self-hosted","windows"],"confidence":0.5,"fix_status":"unknown","needs_auth":"yes","worst_case":"authorized attacker gains elevated privileges over the network","analyst_note":"Find Microsoft's advisory for CVE-2026-109502 to confirm affected versions, configurations and the fixed build.","how_to_check":"- unknown","plain_action":"","product_name":"Microsoft Office SharePoint","needs_analyst":true,"not_affected_if":["unknown"],"who_is_affected":"Organizations running Microsoft SharePoint, on-premises or self-managed, where users have accounts. The sources do not say which SharePoint versions or configurations are affected, and do not name a fix. Teams using only managed Microsoft 365 SharePoint should check Microsoft's own advisory before deciding.","user_interaction":"unknown","product_ecosystem":"vendor","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000703,"input_tokens":4503,"output_tokens":505,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Find Microsoft's advisory for CVE-2026-109502 to confirm affected versions, configurations and the fixed build.","search":"'-109502':15A,18A '-2026':14A,17A 'account':50B 'address':58B 'allow':81C 'alreadi':46B 'attack':44B,65B,84C 'author':9A,83C 'cve':13A,16A 'elev':66B,86C 'flaw':37B 'forgeri':7A,36B,75C 'gain':11A 'host':28B 'intern':57B 'let':8A,42B,63B 'make':51B 'microsoft':1A,19A,23B,39B,78C 'microsoft-offic':22B 'network':70B,90C 'offic':24B,40B,79C 'office':20A 'privileg':12A,67B,87C 'request':6A,35B,55B,74C 'say':61B 'self':27B 'self-host':26B 'send':54B 'server':4A,33B,53B,72C 'server-sid':3A,32B,71C 'sharepoint':2A,21A,29B,41B,80C 'side':5A,34B,73C 'sourc':60B 'ssrf':76C 'user':10A 'valid':49B 'window':30B","nicknames":[],"mitigations":[],"who_affected":"Organizations running Microsoft SharePoint, on-premises or self-managed, where users have accounts. The sources do not say which SharePoint versions or configurations are affected, and do not name a fix. Teams using only managed Microsoft 365 SharePoint should check Microsoft's own advisory before deciding.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":["microsoftofficesharepoint","officesharepoint"],"ptokens":["microsoft","office","sharepoint"],"labels":["high","microsoftoffice","other","selfhosted","sharepoint","vendor","windows"],"campaign_type":null,"search_a":"'-109502':15A,18A '-2026':14A,17A 'author':9A 'cve':13A,16A 'forgeri':7A 'gain':11A 'let':8A 'microsoft':1A,19A 'office':20A 'privileg':12A 'request':6A 'server':4A 'server-sid':3A 'sharepoint':2A,21A 'side':5A 'user':10A","search_b":"'account':50B 'address':58B 'alreadi':46B 'attack':44B,65B 'elev':66B 'flaw':37B 'forgeri':36B 'host':28B 'intern':57B 'let':42B,63B 'make':51B 'microsoft':23B,39B 'microsoft-offic':22B 'network':70B 'offic':24B,40B 'privileg':67B 'request':35B,55B 'say':61B 'self':27B 'self-host':26B 'send':54B 'server':33B,53B 'server-sid':32B 'sharepoint':29B,41B 'side':34B 'sourc':60B 'valid':49B 'window':30B","search_c":"'allow':81C 'attack':84C 'author':83C 'elev':86C 'forgeri':75C 'microsoft':78C 'network':90C 'offic':79C 'privileg':87C 'request':74C 'server':72C 'server-sid':71C 'sharepoint':80C 'side':73C 'ssrf':76C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:18:19+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-109502","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109502","severity":null,"published_at":"2026-11-10T19:18:19+00:00","modified_at":"2026-11-10T19:18:19+00:00","first_seen_at":"2026-11-10T19:24:26+00:00","fetched_at":"2026-11-10T19:24:26+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"}