CVE-2008-3824

CVE-2008-3824 is a medium-severity vulnerability in Horde with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

• Severity: Medium (CVSS 2.0 base score 4.3)
• EPSS exploit prediction: 5% (91st percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-79
• Affected product: Horde
• Published: 2008-09-12
• Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in (1) Text_Filter/Filter/xss.php in Horde 3.1.x before 3.1.9 and 3.2.x before 3.2.2 and (2) externalinput.php in Popoon r22196 and earlier allows remote attackers to inject arbitrary web script or HTML by using / (slash) characters as replacements for spaces in an HTML e-mail message.

Frequently asked questions

What is CVE-2008-3824?

Cross-site scripting (XSS) vulnerability in (1) Text_Filter/Filter/xss.php in Horde 3.1.x before 3.1.9 and 3.2.x before 3.2.2 and (2) externalinput.php in Popoon r22196 and earlier allows remote attackers to inject arbitrary web script or HTML by using / (slash) characters as replacements for spaces in an HTML e-mail message.

How severe is CVE-2008-3824?

CVE-2008-3824 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2008-3824 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-3824?

CVE-2008-3824 primarily affects Horde. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-3824?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2008-3824 published?

CVE-2008-3824 was published on 2008-09-12 and last updated on 2026-06-16.

References

• http://blog.liip.ch/missed-case-in-externalinput-php-resulting-in-viable-xss-attacks.html
• http://marc.info/?l=horde-announce&m=122103888111491&w=2
• http://marc.info/?l=horde-announce&m=122104360019867&w=2
• http://ocert.org/patches/2008-012/Text_Filter.31.patch
• http://ocert.org/patches/2008-012/Text_Filter.patch
• http://osvdb.org/47996
• http://secunia.com/advisories/31842
• http://securityreason.com/securityalert/4245
• http://www.ocert.org/advisories/ocert-2008-012.html
• http://www.openwall.com/lists/oss-security/2008/09/10/1
• http://www.phpmyfaq.de/advisory_2008-09-11.php
• http://www.securityfocus.com/archive/1/496182/100/0/threaded
• http://www.securityfocus.com/bid/31107
• http://www.vupen.com/english/advisories/2008/2548
• https://exchange.xforce.ibmcloud.com/vulnerabilities/45031

Affected products (11)

• cpe:2.3:a:horde:horde:3.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:horde:horde:3.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:horde:horde:3.1.3:*:*:*:*:*:*:*
• cpe:2.3:a:horde:horde:3.1.4:*:*:*:*:*:*:*
• cpe:2.3:a:horde:horde:3.1.5:*:*:*:*:*:*:*
• cpe:2.3:a:horde:horde:3.1.6:*:*:*:*:*:*:*
• cpe:2.3:a:horde:horde:3.1.7:*:*:*:*:*:*:*
• cpe:2.3:a:horde:horde:3.1.8:*:*:*:*:*:*:*
• cpe:2.3:a:horde:horde:3.2:*:*:*:*:*:*:*
• cpe:2.3:a:horde:horde:3.2.1:*:*:*:*:*:*:*
• cpe:2.3:a:popoon:popoon:*:*:*:*:*:*:*:*

More vulnerabilities in Horde

• CVE-2008-7218 — Critical (CVSS 10.0): Unspecified vulnerability in the Horde API in Horde 3.1 before 3.1.6 and 3.2 before 3.2 before 3.2-RC2; Turba H3 2.1…
• CVE-2005-3344 — Critical (CVSS 10.0): The default installation of Horde 3.0.4 contains an administrative account with a blank password, which allows remote…
• CVE-2012-0209 — High (CVSS 7.5): Horde 3.3.12, Horde Groupware 1.2.10, and Horde Groupware Webmail Edition 1.2.10, as distributed by FTP between…
• CVE-2002-0181 — High (CVSS 7.5): Cross-site scripting vulnerability in status.php3 for IMP 2.2.8 and HORDE 1.2.7 allows remote attackers to execute…
• CVE-2006-2195 — Medium (CVSS 6.8): Cross-site scripting (XSS) vulnerability in horde 3 (horde3) before 3.1.1 allows remote attackers to inject arbitrary…
• CVE-2003-0728 — Medium (CVSS 6.4): Horde before 2.2.4 allows remote malicious web sites to steal session IDs and read or create arbitrary email by…

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