Is CVE-2011-1891 being actively exploited?

CVE-2011-1891 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-1891?

CVE-2011-1891 has a CVSS 2.0 base score of 4.3 (MEDIUM).

CVE-2011-1891

MEDIUM · CVSS 4.3EPSS 16.8%EU EUVD

Cross-site scripting (XSS) vulnerability in Microsoft Windows SharePoint Services 3.0 SP2, and SharePoint Foundation 2010 Gold and SP1, allows remote attackers to inject arbitrary web script or HTML via unspecified parameters in a request to a script, aka "Contact Details Reflected XSS Vulnerability."

Key facts

CVSS score: 4.3 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness (CWE): CWE-79
EPSS score: 16.8% (97th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-1889)
Published: September 15, 2011
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-1889 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

microsoft / sharepoint foundation
microsoft / sharepoint foundation
microsoft / sharepoint services
microsoft / sharepoint services

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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