CVE-2011-4273

NONECVSS 0.0Weaponized
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 5%CVSS: —Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
—
EG Score
0.0(none)
EPSS
90.8%
KEV
Not listed

Published

November 3, 2011

Last Modified

April 29, 2026

References (6)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 42× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 16:23 UTCEPSS rescore
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  1. 2026-06-18 17:49 UTCEPSS rescore
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  35. 2026-05-29 13:41 UTCEPSS rescore
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  37. 2026-05-29 06:19 UTCEG score recompute
  38. 2026-05-29 06:19 UTCGHSA enrichment
  39. 2026-05-28 13:42 UTCEPSS rescore
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  42. 2026-05-27 13:38 UTCEPSS rescore
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  44. 2026-05-26 13:41 UTCEPSS rescore
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  46. 2026-05-26 07:16 UTCEPSS rescore
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  48. 2026-05-24 16:43 UTCEPSS rescore
  49. 2026-05-22 21:15 UTCEPSS rescore
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  58. 2026-05-18 21:29 UTCEPSS rescore
  59. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(3 references)

Working exploit code is in the public domain (3 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-36217✓ verified
    First seen Oct 10, 2011

    GoAhead Web Server 2.18 - 'addgroup.asp?group' Cross-Site Scripting

    Open source ↗
  • Exploit-DBEDB-36218✓ verified
    First seen Oct 10, 2011

    GoAhead Web Server 2.18 - 'addlimit.asp?url' Cross-Site Scripting

    Open source ↗
  • Exploit-DBEDB-36219✓ verified
    First seen Oct 10, 2011

    GoAhead Web Server 2.18 - 'adduser.asp' Multiple Cross-Site Scripting Vulnerabilities

    Open source ↗

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2011-4273?
CVE-2011-4273 is a none vulnerability published on November 3, 2011. 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)…
When was CVE-2011-4273 disclosed?
CVE-2011-4273 was first published in the National Vulnerability Database on November 3, 2011, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2011-4273 actively exploited?
CVE-2011-4273 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 90.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2011-4273?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-4273, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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