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 remote attackers to inject arbitrary web script or HTML via the URI, aka "SharePoint XSS Vulnerability."

Published: 2011-09-15 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-1893 is rated Moderate Risk (56.5/100): CVSS Medium severity, with high exploitation likelihood (EPSS 58.89%, 98th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +11.01% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2011-1893

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-12-28 47.88% 58.89% +11.01%
2 2025-12-27 41.34% 47.88% +6.53%
3 2025-12-23 — 41.34% —

Full EPSS history (25 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-1893

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2011-1893

Affected software / configurations for CVE-2011-1893

Vendor Product Version Raw CPE
microsoft sharepoint_foundation 2010 cpe:2.3:a:microsoft:sharepoint_foundation:2010:*:*:*:*:*:*:*
microsoft sharepoint_server 2010 cpe:2.3:a:microsoft:sharepoint_server:2010:*:*:*:*:*:*:*
microsoft sharepoint_services 2.0 cpe:2.3:a:microsoft:sharepoint_services:2.0:*:*:*:*:*:*:*
microsoft sharepoint_services 3.0 cpe:2.3:a:microsoft:sharepoint_services:3.0:sp2:x32:*:*:*:*:*
microsoft sharepoint_services 3.0 cpe:2.3:a:microsoft:sharepoint_services:3.0:sp2:x64:*:*:*:*:*

References for CVE-2011-1893

cvelogic Threat Intelligence