CVE-2026-58639: 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 perform spoofing over a network.
AI Analysis
Technical Summary
This vulnerability, tracked as CVE-2026-58639 and classified under CWE-918, affects Microsoft SharePoint Enterprise Server 2016 version 16.0.0. It involves server-side request forgery (SSRF) that enables an authorized attacker to cause the server to make unintended requests to internal or external systems, effectively allowing spoofing over a network. The vulnerability has been assigned a CVSS v3.1 base score of 6.5, indicating medium severity. Microsoft has published an official fix to address this issue.
Potential Impact
An authorized attacker exploiting this SSRF vulnerability can cause the SharePoint server to send crafted requests to internal or external network resources, potentially leading to information disclosure or network spoofing. The impact is limited to confidentiality as per the CVSS vector (C:H/I:N/A:N). There is no known exploitation in the wild at this time.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Users of Microsoft SharePoint Enterprise Server 2016 version 16.0.0 should apply the vendor-provided patch as soon as possible to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-58639: 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 perform spoofing over a network.
CVSS v3.1
Score 6.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, tracked as CVE-2026-58639 and classified under CWE-918, affects Microsoft SharePoint Enterprise Server 2016 version 16.0.0. It involves server-side request forgery (SSRF) that enables an authorized attacker to cause the server to make unintended requests to internal or external systems, effectively allowing spoofing over a network. The vulnerability has been assigned a CVSS v3.1 base score of 6.5, indicating medium severity. Microsoft has published an official fix to address this issue.
Potential Impact
An authorized attacker exploiting this SSRF vulnerability can cause the SharePoint server to send crafted requests to internal or external network resources, potentially leading to information disclosure or network spoofing. The impact is limited to confidentiality as per the CVSS vector (C:H/I:N/A:N). There is no known exploitation in the wild at this time.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Users of Microsoft SharePoint Enterprise Server 2016 version 16.0.0 should apply the vendor-provided patch as soon as possible to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-01T21:14:44.618Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58639","vendor":"Microsoft"}]
Threat ID: 6a7b57fabf8831d5391556e4
Added to database: 08/11/2026, 17:12:26 UTC
Last enriched: 08/11/2026, 23:12:17 UTC
Last updated: 08/12/2026, 00:12:09 UTC
Views: 4
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