Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-69690

CVE-2026-69690MEDIUM

Microsoft Office SharePoint Spoofing Vulnerability

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   L   R  C  L  L  N    5.4   .0040   32.0     —

AFFECTED
  Product                                           Versions  Fixed
  Microsoft SharePoint Server Subscription Edition  16.0.0 –  —

TIMELINE
  Aug 3   Reserved by microsoft
  Sep 8   Published (CNA: microsoft)
  Sep 9   RESCORED — CVE-2026-69690 (Microsoft SharePoint Server Subscription Edition). CVSS 4.6 → 5.4 (NVD).

CWE-79 · CNA: microsoft · CVSS v3.1 · 1 reference · NVD status: Analyzed

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
August 3, 2026	Reserved	Reserved by microsoft
September 8, 2026	Published	Published (CNA: microsoft)
September 9, 2026	RESCORED	RESCORED — CVE-2026-69690 (Microsoft SharePoint Server Subscription Edition). CVSS 4.6 → 5.4 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Microsoft	Microsoft SharePoint Server Subscription Edition	—	16.0.0	—

Weaknesses

CWE-79

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69690 [vendor-advisory, patch]

Authoritative record: CVE-2026-69690 at cve.org

Vendors: microsoft

Weaknesses: CWE-79

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-69690 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.