The jar protocol handler in Mozilla Firefox before 2.0.0.10 and SeaMonkey before 1.1.7 does not update the origin domain when retrieving the inner URL parameter yields an HTTP redirect, which allows remote attackers to conduct cross-site scripting (XSS) attacks via a jar: URI, a different vulnerability than CVE-2007-5947.
Conclusion & alert: CVE-2007-6589 is rated Moderate Risk (41.3/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.58%). Mandatory action: Review affected assets and schedule remediation.
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 | 2026-03-14 | 0.55% | 0.58% | +0.04% |
| 2 | 2025-03-30 | 0.43% | 0.55% | +0.12% |
| 3 | 2025-03-29 | — | 0.43% | — |
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 | priority | summary | link |
|---|---|---|---|
ubuntu
|
low | CVE-2007-6589 low priority: Ubuntu including 4 source packages (firefox, iceape, seamonkey, xulrunner), 28 status rows across 7 suites (dapper, edgy, feisty, gutsy, hardy, intrepid, upstream): DNE 11, released 7, not-affected 5, ignored 3, needs-triage 2. | https://ubuntu.com/security/CVE-2007-6589 |