CVE-2026-20945HighCVSS 4.6
Microsoft SharePoint Server Spoofing Vulnerability
🔗 CVE IDs covered (1)
📋 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.
🎯 Affected products3
- Microsoft SharePoint Enterprise Server 2016
- Microsoft SharePoint Server 2019
- Microsoft SharePoint Server Subscription Edition
✅ Remediation
KB5002861 (Security Update) — fixed build 16.0.5548.1003 KB5002862 (Security Update) — fixed build 16.0.5548.1003 KB5002854 (Security Update) — fixed build 16.0.10417.20114 KB5002856 (Security Update) — fixed build 16.0.10417.20114 KB5002853 (Security Update) — fixed build 16.0.19725.20210
🔗 References (11)
- advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20945
- patchhttps://www.microsoft.com/en-us/download/details.aspx?id=108611
- referencehttps://support.microsoft.com/help/5002861
- patchhttps://www.microsoft.com/en-us/download/details.aspx?id=108604
- referencehttps://support.microsoft.com/help/5002862
- patchhttps://www.microsoft.com/en-us/download/details.aspx?id=108608
- referencehttps://support.microsoft.com/help/5002854
- patchhttps://www.microsoft.com/en-us/download/details.aspx?id=108605
- referencehttps://support.microsoft.com/help/5002856
- patchhttps://www.microsoft.com/en-us/download/details.aspx?id=108607
- referencehttps://support.microsoft.com/help/5002853