Authenticated content spoofing via undisclosed XSS
Published Jul 16, 2026 · Updated Jul 16, 2026
Cross-site scripting in Microsoft SharePoint Server allows remote authenticated users to spoof web content over a network. Microsoft identifies improper input neutralization during page generation but has not disclosed the affected handler, parameter, or encoding error. Exploitation requires low-privileged SharePoint access and user interaction; successful use can expose or alter data rendered in the victim's browser without interrupting the service.
Summary
What happened
Cross-site scripting in Microsoft SharePoint Server allows remote authenticated users to spoof web content over a network. Microsoft identifies improper input neutralization during page generation but has not disclosed the affected handler, parameter, or encoding error. Exploitation requires low-privileged SharePoint access and user interaction; successful use can expose or alter data rendered in the victim's browser without interrupting the service.
The record
- CVE
- CVE-2026-62826
- Published
- Jul 16, 2026
- Updated
- Jul 16, 2026
- Vendor
- Microsoft
- Product
- Microsoft SharePoint Enterprise Server 2016
- Classifications
- CWE-79, T1189
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 16, 2026CVE publishedPublication date reported by the CVE source.
- Jul 16, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=16.0.0 <16.0.5561.1001
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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