CVE-2026-55034CWE-79

Microsoft SharePoint Server Spoofing Vulnerability

High · published July 14, 2026

CVSS v3.1
7.3
EPSS
1%
Percentile
60.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.00946 · 60.8th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-07-14T17:08Z
EPSS history
Timeline
  • 14 JUL 17:08Z
    Microsoft SharePoint Server Spoofing Vulnerability
    cvelistv5