CVE-2026-20959
Medium · 5.4CVSS
5.4
EPSS
7.7%
Published
Jan 13, 2026
CISA due date
—
The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
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