Public Vulnerability Reports

IBM Lotus Domino Web Access Cross Site Scripting Vulnerability



IBM Lotus Domino Web Access is a web-based messaging and collaboration interface for the Lotus Domino server. More information is available at the following site.


Remote exploitation of a cross-site scripting vulnerability in IBM Lotus Domino Web Access allows attackers to execute arbitrary script code in a targeted users browser.

The vulnerability specifically exists due to improper HTML filtering of e-mail message contents. Although Web Access attempts to filter out HTML and script code, certain code sequences will bypass the filters and successfully execute JavaScript.


Exploitation of this vulnerability allows attackers to execute arbitrary script code in the targeted user's browser.

This can lead to a full compromise of the e-mail account as credentials may be stolen and sent to the attacker. All that is required to trigger this vulnerability is for a user to view a malicious e-mail using Web Access.


iDefense has confirmed that Lotus Domino Web Access 7.0 is vulnerable. Earlier versions are suspected vulnerable.


iDefense is currently unaware of any effective workaround for this issue.


IBM Lotus has addressed this vulnerability in the 6.5.6 and 7.0.2 FP1 releases of Web Access. For more information consult IBM Technote swg21257026 via the following URL.


The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2006-4843 to this issue. This is a candidate for inclusion in the CVE list (, which standardizes names for security problems.


08/17/2006 Initial vendor notification
08/17/2006 Initial vendor response
03/28/2007 Coordinated public disclosure


The discoverer of this vulnerability wishes to remain anonymous.

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Copyright © 2007 Verisign, Inc.

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