Multiple cross-site scripting (XSS) vulnerabilities in the HM Community (com_hmcommunity) component before 1.01 for Joomla! allow remote attackers to inject arbitrary web script or HTML via the (1) language[], (2) university[], (3) persent[], (4) company_name[], (5) designation[], (6) music[], (7) books[], (8) movies[], (9) games[], (10) syp[], (11) ft[], and (12) fa[] parameters in a save task for a profile to index.php. NOTE: some of these details are obtained from third party information.
Conclusion & alert: CVE-2011-4809 is rated Exploit Available (58.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.63%). Core evidence: 2 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.20% over the last day, indicating growing attacker interest. Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| 18050 | exploit_db | edb | 2011-10-31 | Exploit-DB ↗ |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.42% | 1.63% | +1.20% |
| 2 | 2026-04-02 | 0.46% | 0.42% | -0.03% |
| 3 | 2026-01-31 | — | 0.46% | — |
Full EPSS history (13 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| joomlaextensions | com_hmcommunity | <= 1.0 | cpe:2.3:a:joomlaextensions:com_hmcommunity:*:*:*:*:*:*:*:* |