CVE-2009-4363

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2009-12-21 · updated 2026-06-16
Weakness: CWE-79

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."

Affected products

Horde Application Framework: through 3.3.5; 2.0, 2.1, 2.1.3, 2.2, 2.2.1, 2.2.3 (+25)
Horde Groupware: through 1.2.4; 1.0, 1.0.1, 1.0.2, 1.0.3, 1.0.4, 1.0.5 (+22)

References

Get alerted when CVE-2009-4363 or the next vulnerability affects your stack