CVE-2026-70355

HighCVSS 8.7/10Last modified Aug 13, 2026

Description

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

Metrics

CVSS 3.1 8.7/10CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Weakness enumeration

CWE-79

Affected software

Vendor	Product	Versions
Microsoft	Microsoft SharePoint Server 2019	>= 16.0.0, < 16.0.10417.20198
Microsoft	Microsoft SharePoint Server Subscription Edition	>= 16.0.0, < 16.0.19725.20522

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70355Vendor Advisory, Patch

Timeline

Published: Aug 11, 2026
Last modified: Aug 13, 2026
NVD status: Analyzed

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