Microsoft SharePoint Server up to 16.0.20326.20094 path traversal

Summaryinfo

A vulnerability, which was classified as very critical, was found in Microsoft SharePoint Server. Affected by this vulnerability is an unknown functionality. Such manipulation leads to path traversal. This vulnerability is documented as CVE-2026-108452. The attack can be executed remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Microsoft SharePoint Server and classified as very critical. Affected by this issue is some unknown functionality. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Improper limitation of a pathname to a restricted directory ('path traversal') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

The advisory is available at msrc.microsoft.com. This vulnerability is handled as CVE-2026-108452 since 10/09/2026. The exploitation is known to be easy. The attack may be launched remotely. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/15/2026). This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

Upgrading to version 16.0.20326.20190 eliminates this vulnerability.

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Productinfo

Type

• Groupware Software

Vendor

• Microsoft

Name

• SharePoint Server

Version

• 2.0
• 16.0.5548.1003
• 16.0.5552.1002
• 16.0.5556.1005
• 16.0.10417.20114
• 16.0.10417.20153
• 16.0.19725.20210
• 16.0.19725.20384
• 16.0.19725.20522
• 16.0.20326.20074
• 16.0.20326.20082
• 16.0.20326.20090
• 16.0.20326.20094

License

• commercial

Website

• Vendor: https://www.microsoft.com/

CPE 2.3info

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