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

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Oct 13, 2026 · NIST NVD

   Detected

   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.

2. Oct 14, 2026 · NIST NVD

   Updated

   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

• cpe microsoft/sharepoint serverversion unspecified
• microsoft Microsoft SharePoint Server Subscription Editionversion unspecified
• vendor Microsoft Microsoft SharePoint Server Subscription Editionversion unspecified

Sources

• CIRCL Vulnerability LookupVulnerability recordCVE-2026-88209

  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.

  vulnerability.circl.lu
• CVE.orgVulnerability recordCVE-2026-88209

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2026-88209

  30-day exploitation probability 0.4%

  first.org
• Microsoft Security Update GuideVendor advisoryCVE-2026-88209

  Microsoft SharePoint Server Subscription Edition

  msrc.microsoft.com
• NIST NVDVulnerability recordCVE-2026-88209

  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.

  nvd.nist.gov

References

• Patch · msrc.microsoft.com