tiki-register.php in TikiWiki before 1.9.7 allows remote attackers to trigger "notification-spam" via certain vectors such as a comma-separated list of addresses in the email field, related to lack of "a minimal check on email."
Conclusion & alert: CVE-2006-6168 is rated Moderate Risk (56.7/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.83%). 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 | 2026-05-30 | 4.21% | 1.83% | -2.38% |
| 2 | 2026-05-24 | 5.80% | 4.21% | -1.59% |
| 3 | 2026-04-11 | — | 5.80% | — |
Full EPSS history (13 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2006-6168: no source package rows; 0 state rows across 0 repos (none); fixed 0, open 0. | https://security.alpinelinux.org/vuln/CVE-2006-6168 |
ubuntu
|
medium | CVE-2006-6168 medium priority: Ubuntu including 1 source packages (tikiwiki), 4 status rows across 4 suites (dapper, edgy, feisty, upstream): DNE 2, needs-triage 1, not-affected 1. | https://ubuntu.com/security/CVE-2006-6168 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| tiki | tikiwiki_cms\/groupware | <= 1.9.6 | cpe:2.3:a:tiki:tikiwiki_cms\/groupware:*:*:*:*:*:*:*:* |
| tiki | tikiwiki_cms\/groupware | 1.6.1 | cpe:2.3:a:tiki:tikiwiki_cms\/groupware:1.6.1:*:*:*:*:*:*:* |
| tiki | tikiwiki_cms\/groupware | 1.9.0 | cpe:2.3:a:tiki:tikiwiki_cms\/groupware:1.9.0:*:*:*:*:*:*:* |
| tiki | tikiwiki_cms\/groupware | 1.9.0 | cpe:2.3:a:tiki:tikiwiki_cms\/groupware:1.9.0:rc1:*:*:*:*:*:* |
| tiki | tikiwiki_cms\/groupware | 1.9.0 | cpe:2.3:a:tiki:tikiwiki_cms\/groupware:1.9.0:rc2:*:*:*:*:*:* |
| tiki | tikiwiki_cms\/groupware | 1.9.0 | cpe:2.3:a:tiki:tikiwiki_cms\/groupware:1.9.0:rc3:*:*:*:*:*:* |
| tiki | tikiwiki_cms\/groupware | 1.9.1 | cpe:2.3:a:tiki:tikiwiki_cms\/groupware:1.9.1:*:*:*:*:*:*:* |
| tiki | tikiwiki_cms\/groupware | 1.9.2 | cpe:2.3:a:tiki:tikiwiki_cms\/groupware:1.9.2:*:*:*:*:*:*:* |
| tiki | tikiwiki_cms\/groupware | 1.9.3 | cpe:2.3:a:tiki:tikiwiki_cms\/groupware:1.9.3:*:*:*:*:*:*:* |
| tiki | tikiwiki_cms\/groupware | 1.9.4 | cpe:2.3:a:tiki:tikiwiki_cms\/groupware:1.9.4:*:*:*:*:*:*:* |
| tiki | tikiwiki_cms\/groupware | 1.9.5 | cpe:2.3:a:tiki:tikiwiki_cms\/groupware:1.9.5:*:*:*:*:*:*:* |