XSS in TYPO3

CVE-2009-4956

Cross-site scripting (XSS) vulnerability in the Visitor Tracking (ws_stats) extension before 0.1.2 for TYPO3 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2010-07-22 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 4.3 (Medium). Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.008 (56.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

TYPO3
Wapplersystems Ws Stats — versions 0.0.13, 0.0.15, 0.1.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

typo3.org/extensions/repository/view/ws_stats/0.1.2/ (Patch)
typo3.org/teams/security/security-bulletins/typo3-sa-2009-005/ (Patch, Vendor Advisory)