Microsoft SharePoint Server Subscription Edition vulnerability

Improper limitation of a pathname to a restricted directory ('path traversal') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

Published 15 Oct 2026Updated 17 Oct 20261 sources
CVSS 8.8

What happened

Improper limitation of a pathname to a restricted directory ('path traversal') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

Affected versions

Microsoft SharePoint Server Subscription Edition: 16.0.0 through before 16.0.20326.20190 (custom) Fixed: See vendor advisory.

Why it matters

Review the vendor advisory and exposure of the affected product to determine operational impact.

Detection & mitigation

  • Apply vendor-provided updates or mitigations.
  • Review affected product exposure and access logs.

Public PoC references

No public PoC reference has passed the current publication threshold.