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Vulnerabilities

Vulnerability · CVE-2011-1893

Cross-site scripting (XSS) vulnerability in Microsoft Office SharePoint Server 2010, Windows SharePoint Services 2.0 and 3.0 SP2, and SharePoint Foundation 2010 allows…

Published Sep 15, 2011 · catalog updated Jun 16, 2026 · sharepoint services

Last checked Nov 2, 2026. A connected source was read within the last 7 days.

Check this week

CVE-2011-1893 is not in CISA KEV. FIRST estimates a 16.77% chance of exploitation in the next 30 days. Check whether you run sharepoint services.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium4.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
16.77%
Remediation
Advisory link
Affected products
cpe microsoft/sharepoint foundation · cpe microsoft/sharepoint server · cpe microsoft/sharepoint services

Cross-site scripting (XSS) vulnerability in Microsoft Office SharePoint Server 2010, Windows SharePoint Services 2.0 and 3.0 SP2, and SharePoint Foundation 2010 allows remote attackers to inject arbitrary web script or HTML via the URI, aka "SharePoint XSS Vulnerability."

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe microsoft/sharepoint foundation2010
  • cpe microsoft/sharepoint server2010
  • cpe microsoft/sharepoint services2.0
  • cpe microsoft/sharepoint services3.0

How to fix CVE-2011-1893

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2011-1893 is not in CISA KEV. FIRST estimates a 16.77% chance of exploitation in the next 30 days. Check whether you run sharepoint services.

Which versions are affected?

Compare what you have installed with microsoft/sharepoint foundation 2010; microsoft/sharepoint server 2010; microsoft/sharepoint services 2.0; microsoft/sharepoint services 3.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-79: Cross-site Scripting (XSS). EPSS 16.77%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Microsoft SharePoint security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 15, 2011 · Monitored products — critical

    Detected

    Cross-site scripting (XSS) vulnerability in Microsoft Office SharePoint Server 2010, Windows SharePoint Services 2.0 and 3.0 SP2, and SharePoint Foundation 2010 allows remote attackers to inject arbitrary web script or HTML via the URI, aka "SharePoint XSS Vulnerability."

  2. Jun 16, 2026 · Monitored products — critical

    Updated

    Cross-site scripting (XSS) vulnerability in Microsoft Office SharePoint Server 2010, Windows SharePoint Services 2.0 and 3.0 SP2, and SharePoint Foundation 2010 allows remote attackers to inject arbitrary web script or HTML via the URI, aka "SharePoint XSS Vulnerability."

Sources

  • CVE.orgVulnerability recordCVE-2011-1893

    Official CVE identifier

    cve.org
  • Monitored products — criticalVendor advisoryCVE-2011-1893

    Cross-site scripting (XSS) vulnerability in Microsoft Office SharePoint Server 2010, Windows SharePoint Services 2.0 and 3.0 SP2, and SharePoint Foundation 2010 allows remote attackers to inject arbitrary web script or HTML via the URI, aka "SharePoint XSS Vulnerability."

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 1, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 2, 2026
  • Monitored products — criticalNov 1, 2026