CVE-2010-4555

Name of the Vulnerable Software and Affected Versions SquirrelMail versions 1.4.21 and earlier

Description The issue involves multiple cross-site scripting (XSS) vulnerabilities that allow remote attackers to inject arbitrary web script or HTML. This can occur through various vectors, including drop-down selection lists, the use of the > (greater than) character in the SquirrelSpell spellchecking plugin, and errors related to the Index Order (also known as options order) page.

Recommendations For SquirrelMail versions 1.4.21 and earlier, update to a version later than 1.4.21 to resolve the issue. As a temporary workaround, consider disabling the SquirrelSpell spellchecking plugin until a patch is available. Restrict access to the Index Order page to minimize the risk of exploitation.