Privilege escalation via authenticated SSRF
Published Aug 11, 2026 · Updated Aug 25, 2026
Server-side request forgery in Microsoft SharePoint Server Subscription Edition before 16.0.19725.20522 lets remote authenticated users elevate privileges. Microsoft has disclosed the SSRF class and affected build range, but not the specific SharePoint component, request sink, or validation failure that lets attacker-controlled input drive server-originated requests. Exploitation requires valid access to a vulnerable on-premises Subscription Edition deployment; public records do not describe unauthenticated reachability or in-the-wild exploitation.
Summary
What happened
Server-side request forgery in Microsoft SharePoint Server Subscription Edition before 16.0.19725.20522 lets remote authenticated users elevate privileges. Microsoft has disclosed the SSRF class and affected build range, but not the specific SharePoint component, request sink, or validation failure that lets attacker-controlled input drive server-originated requests. Exploitation requires valid access to a vulnerable on-premises Subscription Edition deployment; public records do not describe unauthenticated reachability or in-the-wild exploitation.
The record
- CVE
- CVE-2026-70326
- Published
- Aug 11, 2026
- Updated
- Aug 25, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-918
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 11, 2026CVE publishedPublication date reported by the CVE source.
- Aug 25, 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?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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