mod_jk in Apache Tomcat JK Web Server Connector 1.2.x before 1.2.23 decodes request URLs within the Apache HTTP Server before passing the URL to Tomcat, which allows remote attackers to access protected pages via a crafted prefix JkMount, possibly involving double-encoded .. (dot dot) sequences and directory traversal, a related issue to CVE-2007-0450.
Conclusion & alert: CVE-2007-1860 is rated Moderate Risk (52.6/100): CVSS Medium severity, with high exploitation likelihood (EPSS 24.51%, 96th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. Mandatory action: High exploitation likelihood—assess exposure and prioritize 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 | 2026-03-04 | 25.52% | 24.51% | -1.01% |
| 2 | 2026-01-11 | 22.94% | 25.52% | +2.57% |
| 3 | 2025-11-19 | — | 22.94% | — |
Full EPSS history (19 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2007-1860 not yet assigned priority: Debian including 1 source packages (libapache-mod-jk), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2007-1860 |
gentoo
|
low | CVE-2007-1860: 1 GLSA(s) (200708-15), 1 atom(s) (www-apache/mod_jk); latest impact low. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2007-1860 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2007-1860 |
ubuntu
|
medium | CVE-2007-1860 medium priority: Ubuntu including 1 source packages (libapache-mod-jk), 7 status rows across 7 suites (dapper, edgy, feisty, gutsy, hardy, intrepid, upstream): released 4, ignored 2, needs-triage 1. | https://ubuntu.com/security/CVE-2007-1860 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| apache | tomcat_jk_web_server_connector | <= 1.2.22 | cpe:2.3:a:apache:tomcat_jk_web_server_connector:*:*:*:*:*:*:*:* |