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Δ / VULNERABILITY RECORD

CVE-2026-20958.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSMEDIUM / 5.4No severity score in this snapshot.
EXPLOITATION STATUSNot listed in the cached KEV catalogThis does not establish absence of exploitation.
RECORD STATUSMicrosoft vendor recordModified Jan 14, 2026

Disclosure summary

Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.

Source-reported weakness categories

CWE-918

Source-specific records & product guidance

Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.

Microsoft Security Updates (CVRF) · 2026-Jan

Open original source · Updated Jan 14, 2026

Microsoft SharePoint Information Disclosure Vulnerability

Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.

Microsoft maximum product score: 5.4

VendorProduct / associationVersion / bounds
Microsoft update guideMicrosoft SharePoint Enterprise Server 2016 (MSRC status code 3)
Microsoft update guideMicrosoft SharePoint Server 2019 (MSRC status code 3)
Microsoft update guideMicrosoft SharePoint Server Subscription Edition (MSRC status code 3)

Vendor remediation references

Original records & references

PUBLISHED 2026-01-13T03:00:00-05:00
MODIFIED 2026-01-14T03:00:00-05:00
INGESTED 2026-10-08T12:45:23-04:00