Findings

CVE-2026-102864

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

Published Oct 13, 2026 · updated Oct 14, 2026 · Microsoft Microsoft SharePoint Server Subscription Edition

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
  • vendor Microsoft Microsoft SharePoint Server Subscription Editionversion unspecified

Sources

  • CIRCL Vulnerability LookupVulnerability recordCVE-2026-102864

    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-2026-102864

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-102864

    30-day exploitation probability 0.4%

    first.org
  • NCSC NetherlandsGovernment advisoryCVE-2026-102864

    Microsoft heeft xxx kwetsbaarheden verholpen in diverse Office producten, zoals Word, Excel, Access, Outlook, Visio, Sharepoint en PowerPoint, maar ook subcomponenten als Shell, Azure Key Vault en Click-to-Run. Een kwaadwillende kan de kwetsbaarheden misbruiken om een Denial-of-S

    advisories.ncsc.nl
  • NIST NVDVulnerability recordCVE-2026-102864

    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

CVE-2026-102864 · ZeroDay Findings