What’s Vulnerable › Vulnerabilities

CVE-2026-70332: Microsoft Office SharePoint Spoofing Vulnerability

• Severity: critical (CVSS 9.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-06 · updated 2026-10-30
• Weakness: CWE-79

Description

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.

Affected products

• Microsoft SharePoint Online: all versions
• Microsoft SharePoint Online: all versions

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70332

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