Cross-site Scripting (XSS) in Mahara before 1.5.9 and 1.6.x before 1.6.4 allows remote attackers to inject arbitrary web script or HTML via the TinyMCE editor.
Conclusion & alert: CVE-2013-1426 is rated Moderate Risk (45.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.04%). 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 | 0.41% | 1.04% | +0.63% |
| 2 | 2025-03-17 | 0.18% | 0.41% | +0.23% |
| 3 | 2024-12-17 | — | 0.18% | — |
Full EPSS history (5 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.1 | 3.1 | MEDIUM |
|
2.8 | 2.7 | [email protected] |
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
ubuntu
|
medium | CVE-2013-1426 medium priority: Ubuntu including 1 source packages (mahara), 13 status rows across 13 suites (lucid, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): DNE 7, ignored 5, needs-triage 1. | https://ubuntu.com/security/CVE-2013-1426 |
| URL | Tags |
|---|---|
| https://bugs.launchpad.net/mahara/+bug/1153423 | Issue Tracking Third Party Advisory |
| https://mahara.org/interaction/forum/topic.php?id=5365 | Patch Vendor Advisory |
| https://security-tracker.debian.org/tracker/CVE-2013-1426 | Third Party Advisory |