Cross-site scripting vulnerability in Webalizer 2.01-06, and possibly other versions, allows remote attackers to inject arbitrary HTML tags by specifying them in (1) search keywords embedded in HTTP referrer information, or (2) host names that are retrieved via a reverse DNS lookup.
Conclusion & alert: CVE-2001-0835 is rated Moderate Risk (57.3/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.67%). 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 | 4.69% | 2.67% | -2.02% |
| 2 | 2025-03-30 | 3.81% | 4.69% | +0.88% |
| 3 | 2025-03-29 | — | 3.81% | — |
Full EPSS history (6 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 |
|---|---|---|---|
redhat
|
— | — | https://access.redhat.com/security/cve/CVE-2001-0835 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| bradford_barrett | webalizer | <= 2.0.6 | cpe:2.3:a:bradford_barrett:webalizer:*:*:*:*:*:*:*:* |