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Vulnerability record · CVE-2009-4363 · published 21 December 2009

CVE-2009-4363: Horde application framework cross-site scripting vulnerability

Horde · Application Framework

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."

4.3 CVSS 2.0 Medium EPSS 1.4% · top 29.2% CWE-79 · Cross-site scripting
4.3CVSS 2.0 base score
1.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
14References, 4 tagged exploit
16 Jun 2026Last modified by NVD

Description

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."

AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://bugs.horde.org/ticket/8715 Exploit
http://bugs.horde.org/view.php?actionID=view_file&type=patch&file=0002-Bug-8715-Fix-XSS-vulnerability%5B1%5D.patch&ticke Exploit
http://cvs.horde.org/diff.php/horde/docs/CHANGES?r1=1.515.2.559&r2=1.515.2.589&ty=h
http://lists.horde.org/archives/announce/2009/000529.html Patch
http://marc.info/?l=horde-announce&m=126100750018478&w=2 Patch
http://marc.info/?l=horde-announce&m=126101076422179&w=2 Patch
http://securitytracker.com/id?1023365
http://bugs.horde.org/ticket/8715 Exploit
http://bugs.horde.org/view.php?actionID=view_file&type=patch&file=0002-Bug-8715-Fix-XSS-vulnerability%5B1%5D.patch&ticke Exploit
http://cvs.horde.org/diff.php/horde/docs/CHANGES?r1=1.515.2.559&r2=1.515.2.589&ty=h
http://lists.horde.org/archives/announce/2009/000529.html Patch
http://marc.info/?l=horde-announce&m=126100750018478&w=2 Patch
http://marc.info/?l=horde-announce&m=126101076422179&w=2 Patch
http://securitytracker.com/id?1023365

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2009-4363), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.