Is CVE-2011-4940 being actively exploited?

CVE-2011-4940 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-4940?

CVE-2011-4940 has a CVSS 2.0 base score of 2.6 (LOW).

CVE-2011-4940

LOW · CVSS 2.6EPSS 3.2%EU EUVD

The list_directory function in Lib/SimpleHTTPServer.py in SimpleHTTPServer in Python before 2.5.6c1, 2.6.x before 2.6.7 rc2, and 2.7.x before 2.7.2 does not place a charset parameter in the Content-Type HTTP header, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks against Internet Explorer 7 via UTF-7 encoding.

Key facts

CVSS score: 2.6 (v2.0)
Severity: LOW
CVSS vector: AV:N/AC:H/Au:N/C:N/I:P/A:N
Weakness (CWE): CWE-79
EPSS score: 3.2% (88th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-4850)
Published: June 27, 2012
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-4850 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

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References

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

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