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CVE-2026-48560 Microsoft CVE debrief

CVE-2026-48560 is a MEDIUM-severity vulnerability (CVSS Score: 5.4) affecting Microsoft Office SharePoint. The vulnerability involves improper neutralization of input during web page generation, allowing an authorized attacker to perform spoofing over a network. The vulnerability was published on 2026-06-09T17:17:44.633Z and last modified on 2026-06-12T15:41:27.713Z.

Vendor
Microsoft
Product
Microsoft SharePoint Enterprise Server 2016
CVSS
MEDIUM 5.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-07-09
Advisory published
2026-06-09
Advisory updated
2026-07-09

Who should care

Administrators and users of Microsoft Office SharePoint Server, particularly those with authorization to access vulnerable versions, should be aware of this vulnerability.

Technical summary

The vulnerability exists in Microsoft Office SharePoint Server due to improper neutralization of input during web page generation, allowing for cross-site scripting (XSS) attacks. An authorized attacker can exploit this vulnerability to perform spoofing over a network.

Defensive priority

MEDIUM

Recommended defensive actions

  • Apply patches or updates provided by Microsoft to vulnerable SharePoint Server versions.
  • Restrict access to vulnerable SharePoint Server instances.
  • Monitor SharePoint Server logs for suspicious activity.

Evidence notes

The CVE record and details were obtained from the official CVE.org and NVD databases.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-48560 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-48560

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-48560 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-48560

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.