CVE-2009-4363

Text_Filter/lib/Horde/Text/Filter/Xss.php in Horde Application Framework before 3.3.6, Horde...

4.3 Medium

Text_Filter/lib/Horde/Text/Filter/Xss.php in Horde Application Framework before 3.3.6, Horde Groupware before 1.2.5, and Horde Groupware Webmail Edition before 1.2.5 does not properly handle data: URIs, which allows remote attackers to conduct cross-site scripting (XSS) attacks via data:text/html values for the HREF attribute of an A element in an HTML e-mail message. NOTE: the vendor states that the issue is caused by "an XSS vulnerability in Firefox browsers."

Exploit likelihood

1.37%Up 0.1 points since Feb 4, 2022

What each source reports

NVD Score used 4.3

Record: CVE-2009-4363
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-2009-4363
Updated: 2026-11-02

EUVDEUVD-2009-4331 No score

Record: EUVD-2009-4331
Updated: 2026-11-03

GitHub AdvisoriesGHSA-pjmv-2gvx-rph8 No score

Text_Filter/lib/Horde/Text/Filter/Xss.php in Horde Application Framework before 3.3.6, Horde...

Record: GHSA-pjmv-2gvx-rph8
Weakness: CWE-79
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`horde3` Debian:4.0 From an advisory covering 3 CVEs	before 3.1.3-4etch7, plus listed versions 3.1.3-43.1.3-4etch13.1.3-4etch23.1.3-4etch33.1.3-4etch43.1.3-4etch53.1.3-4etch6	3.1.3-4etch7
`horde3` Debian:5.0 From an advisory covering 3 CVEs	before 3.2.2+debian0-2+lenny2	3.2.2+debian0-2+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-2009-4363 is a medium vulnerability (CVSS 4.3) in Horde Application Framework, published December 21, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.37%, the 72nd percentile. No source names a fixed version.