CVE-2011-4909

NONECVSS 0.0Weaponized
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 2%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 Joomla! before 1.5.12 allow remote attackers to inject arbitrary web script or HTML via the HTTP_REFERER header to (1) components/com_content/views/article/tmpl/form.php, (2) components/com_user/controller.php, (3) plugins/system/legacy/html.php, or (4) templates/beez/html/com_content/article/form.php.

CVSS v3
—
EG Score
0.0(none)
EPSS
76.9%
KEV
Not listed

Published

October 7, 2012

Last Modified

April 29, 2026

References (14)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 43× 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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  36. 2026-05-29 02:24 UTCEG score recompute
  37. 2026-05-29 02:24 UTCGHSA enrichment
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Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-33061✓ verified
    First seen Jun 1, 2009

    Joomla! 1.5.x - Cross-Site Scripting / Information Disclosure

    Open source ↗

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2011-4909?
CVE-2011-4909 is a none vulnerability published on October 7, 2012. Multiple cross-site scripting (XSS) vulnerabilities in Joomla! before 1.5.12 allow remote attackers to inject arbitrary web script or HTML via the HTTPREFERER header to (1) components/comcontent/views/article/tmpl/form.php, (2) components/comuser/controller.php, (3) plugins/system/legacy/html.php,…
When was CVE-2011-4909 disclosed?
CVE-2011-4909 was first published in the National Vulnerability Database on October 7, 2012, 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-2011-4909 actively exploited?
CVE-2011-4909 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 76.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2011-4909?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-4909, 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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