Is CVE-2011-4273 being actively exploited?

CVE-2011-4273 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-4273?

CVE-2011-4273 has a CVSS 2.0 base score of 4.3 (MEDIUM).

CVE-2011-4273

MEDIUM · CVSS 4.3EPSS 4.8%EU EUVD

Multiple cross-site scripting (XSS) vulnerabilities in GoAhead Webserver 2.18 allow remote attackers to inject arbitrary web script or HTML via (1) the group parameter to goform/AddGroup, related to addgroup.asp; (2) the url parameter to goform/AddAccessLimit, related to addlimit.asp; or the (3) user (aka User ID) or (4) group parameter to goform/AddUser, related to adduser.asp.

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: 4.8% (92th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-4215)
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-2011-4215 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

goahead / goahead webserver

References

http://secunia.com/advisories/46894
http://www.kb.cert.org/vuls/id/384427(Exploit, US Government Resource)
https://exchange.xforce.ibmcloud.com/vulnerabilities/70434

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