AI and data stack advisories

Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

MicrosoftCVE-2026-70306

Microsoft Office SharePoint: cross-site scripting

Microsoft

CVE-2026-70306 · Published Aug 11, 2026 · updated Aug 16, 2026

Critical9.3
Fix: upgrade to 16.0.5565.1001 or later (3 fixed versions below)
Microsoft advisory

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 versions

PackageAffectedFixed in
Microsoft SharePoint Enterprise Server 2016
Product
>= 16.0.0, < 16.0.5565.100116.0.5565.1001
Microsoft SharePoint Server 2019
Product
>= 16.0.0, < 16.0.10417.2019816.0.10417.20198
Microsoft SharePoint Server Subscription Edition
Product
>= 16.0.0, < 16.0.19725.2052216.0.19725.20522
Details and references
CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-79

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