CVE-2010-1107 in Recent Comments
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the Recent Comments module 5.x through 5.x-1.2 and 6.x through 6.x-1.0 for Drupal allows remote authenticated users to inject arbitrary web script or HTML via a "custom block title interface."
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Analysis
by VulDB Data Team • 05/03/2026
The vulnerability identified as CVE-2010-1107 represents a cross-site scripting flaw within Drupal's Recent Comments module affecting versions 5.x through 5.x-1.2 and 6.x through 6.x-1.0. This issue falls under the CWE-79 category of Cross-Site Scripting, specifically representing a stored XSS vulnerability that allows attackers to inject malicious scripts into web pages viewed by other users. The vulnerability manifests through the custom block title interface functionality, which fails to properly sanitize user input before rendering it in the web interface.
The technical exploitation of this vulnerability occurs when authenticated users with appropriate permissions interact with the custom block title feature within the Recent Comments module. When malicious input containing script code is submitted through this interface, the system does not adequately validate or escape the input before displaying it in the user interface. This allows attackers to inject arbitrary HTML and JavaScript code that executes in the context of other users' browsers. The vulnerability is particularly concerning because it requires only authenticated access, meaning that users with minimal privileges can potentially compromise the security of other users within the same Drupal installation.
The operational impact of this vulnerability extends beyond simple script injection, as it can enable attackers to perform a wide range of malicious activities including session hijacking, credential theft, redirection to malicious sites, and data exfiltration. Attackers can craft payloads that exploit the XSS vulnerability to steal cookies, modify page content, or redirect users to phishing sites. The fact that this affects the Recent Comments module means that the vulnerability could be exploited in contexts where users expect to see trusted content, making social engineering attacks more effective. This vulnerability particularly impacts organizations relying on Drupal for content management, as it allows attackers to compromise the integrity of user sessions and potentially escalate privileges within the application.
Security professionals should implement multiple layers of defense to mitigate this vulnerability, including input validation, output encoding, and proper sanitization of all user-provided content. The recommended mitigations include upgrading to patched versions of the Recent Comments module, implementing proper content security policies, and applying web application firewalls to detect and block malicious payloads. Organizations should also conduct regular security assessments of their Drupal installations to identify and remediate similar vulnerabilities. The ATT&CK framework categorizes this vulnerability under T1059 for Command and Scripting Interpreter and T1566 for Phishing, highlighting the potential for attackers to use this vulnerability as part of broader attack chains. Additionally, implementing proper access controls and least privilege principles can limit the potential impact of such vulnerabilities by restricting the permissions of authenticated users who might exploit this flaw.