Cross-site scripting (XSS) vulnerability in memcp.php in XMB U2U Instant Messenger allows remote authenticated users to inject arbitrary web script or HTML via the recipient field.
Conclusion & alert: CVE-2007-0519 is rated Low Risk (38.4/100): CVSS Low severity, with medium exploitation likelihood (EPSS 1.31%). Core evidence: EPSS rose +1.05% over the last day, indicating growing attacker interest. Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
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 | 0.26% | 1.31% | +1.05% |
| 2 | 2025-09-14 | 0.21% | 0.26% | +0.05% |
| 3 | 2025-03-17 | — | 0.21% | — |
Full EPSS history (7 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 3.5 | 2.0 | LOW |
|
6.8 | 2.9 | [email protected] |
As noted in https://docs.xmbforum2.com/index.php?title=Security_Issue_History XMB version 1.9.10 or later must be installed to prevent attacks described by this CVE. All earlier versions of XMB are vulnerable until upgraded. Upgrades are available at https://www.xmbforum2.com/
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| xmb_software | u2u_instant_messenger | — | cpe:2.3:a:xmb_software:u2u_instant_messenger:*:*:*:*:*:*:*:* |