Is CVE-2008-2783 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2008-2783, but active exploitation has not been confirmed.

Can CVE-2008-2783 be exploited remotely?

Yes. CVE-2008-2783 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2008-2783?

CVE-2008-2783 has a CVSS score of 4.3 (MEDIUM).

HOME VULNERABILITIESCVE-2008-2783

MEDIUMPOC

CVE-2008-2783

CWE-79Published: June 19, 2008· Updated: Jun 16, 2026

4.3

CVSS v3.1

Official Description

Multiple cross-site scripting (XSS) vulnerabilities in Horde Groupware, Groupware Webmail Edition, and Kronolith allow remote attackers to inject arbitrary web script or HTML via the timestamp parameter to (1) week.php, (2) workweek.php, and (3) day.php; and (4) the horde parameter in the PATH_INFO to the default URI. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

NVD Source

Technical Analysis

CVE-2008-2783 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A proof-of-concept (PoC) exploit exists for CVE-2008-2783. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.