CVE-2026-55051: CWE-918: Server-Side Request Forgery (SSRF) in Microsoft Microsoft SharePoint Enterprise Server 2016
Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-55051) involves server-side request forgery (CWE-918) in Microsoft SharePoint Enterprise Server 2016. An authorized attacker can exploit this flaw to cause the server to make unintended requests, potentially disclosing sensitive information over the network. The CVSS v3.1 base score is 6.5, indicating a medium severity impact with high confidentiality impact but no integrity or availability impact. The vulnerability affects version 16.0.0 of SharePoint Enterprise Server 2016. Microsoft has released an official fix for this issue as documented in their security update guide.
Potential Impact
An authorized attacker can exploit this SSRF vulnerability to disclose sensitive information over the network. The impact is limited to confidentiality, with no direct impact on integrity or availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users of Microsoft SharePoint Enterprise Server 2016 version 16.0.0 should apply the security update provided by Microsoft as detailed in their advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55051. No additional mitigation actions are required beyond applying the official patch.
CVE-2026-55051: CWE-918: Server-Side Request Forgery (SSRF) in Microsoft Microsoft SharePoint Enterprise Server 2016
Description
Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.
CVSS v3.1
Score 6.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-55051) involves server-side request forgery (CWE-918) in Microsoft SharePoint Enterprise Server 2016. An authorized attacker can exploit this flaw to cause the server to make unintended requests, potentially disclosing sensitive information over the network. The CVSS v3.1 base score is 6.5, indicating a medium severity impact with high confidentiality impact but no integrity or availability impact. The vulnerability affects version 16.0.0 of SharePoint Enterprise Server 2016. Microsoft has released an official fix for this issue as documented in their security update guide.
Potential Impact
An authorized attacker can exploit this SSRF vulnerability to disclose sensitive information over the network. The impact is limited to confidentiality, with no direct impact on integrity or availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users of Microsoft SharePoint Enterprise Server 2016 version 16.0.0 should apply the security update provided by Microsoft as detailed in their advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55051. No additional mitigation actions are required beyond applying the official patch.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-16T14:13:49.836Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55051","vendor":"Microsoft"}]
Threat ID: 6a5676b368715ace43f0aa9e
Added to database: 07/14/2026, 17:49:39 UTC
Last enriched: 08/13/2026, 15:36:01 UTC
Last updated: 08/22/2026, 22:52:14 UTC
Views: 68
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