{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-20945","assignerOrgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","state":"PUBLISHED","assignerShortName":"microsoft","dateReserved":"2025-12-04T20:04:16.339Z","datePublished":"2026-04-14T16:56:55.466Z","dateUpdated":"2026-05-12T17:37:52.224Z"},"containers":{"cna":{"title":"Microsoft SharePoint Server Spoofing Vulnerability","datePublic":"2026-04-14T14:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:sharepoint_server_2016:*:*:*:*:enterprise:*:*:*","versionStartIncluding":"16.0.0","versionEndExcluding":"16.0.5548.1003"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:sharepoint_server_2019:*:*:*:*:*:*:*:*","versionStartIncluding":"16.0.0","versionEndExcluding":"16.0.10417.20114"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:*","versionStartIncluding":"16.0.0","versionEndExcluding":"16.0.19725.20210"}]}]}],"affected":[{"vendor":"Microsoft","product":"Microsoft SharePoint Enterprise Server 2016","platforms":["x64-based Systems"],"versions":[{"version":"16.0.0","lessThan":"16.0.5548.1003","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Microsoft SharePoint Server 2019","platforms":["x64-based Systems"],"versions":[{"version":"16.0.0","lessThan":"16.0.10417.20114","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Microsoft SharePoint Server Subscription Edition","platforms":["x64-based Systems"],"versions":[{"version":"16.0.0","lessThan":"16.0.19725.20210","versionType":"custom","status":"affected"}]}],"descriptions":[{"value":"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.","lang":"en-US"}],"problemTypes":[{"descriptions":[{"description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en-US","type":"CWE","cweId":"CWE-79"}]}],"providerMetadata":{"orgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","shortName":"microsoft","dateUpdated":"2026-05-12T17:37:52.224Z"},"references":[{"name":"Microsoft SharePoint Server Spoofing Vulnerability","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20945"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en-US","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","baseSeverity":"MEDIUM","baseScore":4.6,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C"}}]},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-14T19:03:46.928499Z","id":"CVE-2026-20945","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-04-14T19:22:41.625Z"}}]}}