CVE-2009-3634

Cross-site scripting (XSS) vulnerability in the Frontend Login Box (aka felogin) subcomponent in...

4.3 Medium

Cross-site scripting (XSS) vulnerability in the Frontend Login Box (aka felogin) subcomponent in TYPO3 4.2.0 through 4.2.6 allows remote attackers to inject arbitrary web script or HTML via unspecified parameters.

Exploit likelihood

1.96%Up 0.6 points since Feb 4, 2022

What each source reports

NVD Score used 4.3

Record: CVE-2009-3634
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness: CWE-79
Updated: 2026-11-02

CVE List No score

Record: CVE-2009-3634
Updated: 2026-11-02

EUVDEUVD-2009-3610 No score

Record: EUVD-2009-3610
Updated: 2026-11-03

GitHub AdvisoriesGHSA-55hp-jcxq-hgwc No score

Cross-site scripting (XSS) vulnerability in the Frontend Login Box (aka felogin) subcomponent in...

Record: GHSA-55hp-jcxq-hgwc
Weakness: CWE-79
Updated: 2026-11-02

Affected products

typo3

Affected packages

Affected packages
Package	Affected	Fixed
`typo3-src` Debian:4.0 From an advisory covering 9 CVEs	before 4.0.2+debian-9	4.0.2+debian-9
`typo3-src` Debian:5.0 From an advisory covering 9 CVEs	before 4.2.5-1+lenny2, plus listed versions 4.2.5-14.2.5-1+lenny1	4.2.5-1+lenny2

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2009-3634 is a medium vulnerability (CVSS 4.3) in Typo3, published November 2, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.96%, the 80th percentile. No source names a fixed version.