Multiple cross-site scripting (XSS) vulnerabilities in OpenStack Dashboard (Horizon) 2013.2 and earlier allow local users to inject arbitrary web script or HTML via an instance name to (1) "Volumes" or (2) "Network Topology" page.
Conclusion & alert: CVE-2013-6858 is rated Moderate Risk (44.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.73%). Core evidence: EPSS rose +1.22% over the last day, indicating growing attacker interest. 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 | 2026-06-15 | 0.51% | 1.73% | +1.22% |
| 2 | 2026-02-13 | 0.76% | 0.51% | -0.24% |
| 3 | 2025-03-30 | — | 0.76% | — |
Full EPSS history (7 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 |
|---|---|---|---|
debian
|
not yet assigned | CVE-2013-6858 not yet assigned priority: Debian including 1 source packages (horizon), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2013-6858 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2013-6858 |
ubuntu
|
medium | CVE-2013-6858 medium priority: Ubuntu including 1 source packages (horizon), 6 status rows across 6 suites (lucid, precise, quantal, raring, saucy, upstream): released 3, DNE 1, needs-triage 1, not-affected 1. | https://ubuntu.com/security/CVE-2013-6858 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| openstack | horizon | >= 2013.1, <= 2013.2 | cpe:2.3:a:openstack:horizon:*:*:*:*:*:*:*:* |
| opensuse | opensuse | 13.1 | cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 12.10 | cpe:2.3:o:canonical:ubuntu_linux:12.10:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 13.04 | cpe:2.3:o:canonical:ubuntu_linux:13.04:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 13.10 | cpe:2.3:o:canonical:ubuntu_linux:13.10:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://lists.opensuse.org/opensuse-updates/2015-01/msg00040.html | Mailing List Third Party Advisory |
| http://secunia.com/advisories/55770 | Third Party Advisory |
| http://secunia.com/advisories/56117 | Third Party Advisory |
| http://www.securityfocus.com/bid/63787 | Third Party Advisory VDB Entry |
| http://www.ubuntu.com/usn/USN-2062-1 | Third Party Advisory |
| https://bugs.launchpad.net/horizon/+bug/1247675 | Issue Tracking Patch Third Party Advisory |