Is CVE-2011-4277 being actively exploited?

CVE-2011-4277 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-4277?

CVE-2011-4277 has a CVSS 2.0 base score of 4.3 (MEDIUM).

CVE-2011-4277

MEDIUM · CVSS 4.3EPSS 0.9%EU EUVD

Cross-site scripting (XSS) vulnerability in CourseForum ProjectForum 7.0.1.3038 allows remote attackers to inject arbitrary web script or HTML via a crafted name of an object within a more object on a wiki page.

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: 0.9% (60th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-4219)
Published: November 3, 2011
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-4219 in the EU Vulnerability Database. Last updated in EUVD on September 16, 2024.

View on the EU Vulnerability Database

Affected products

courseforum / projectforum

References

http://www.kb.cert.org/vuls/id/901251(US Government Resource)

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

Query CVEs from your AI assistant

The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.

Add the CVE brain