CVE-2010-0726 in tDiary
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the tb-send.rb (TrackBack transmission) plugin in tDiary 2.2.2 and earlier allows remote attackers to inject arbitrary web script or HTML via unknown vectors, possibly related to the (1) plugin_tb_url and (2) plugin_tb_excerpt parameters.
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Analysis
by VulDB Data Team • 05/01/2026
The CVE-2010-0726 vulnerability represents a critical cross-site scripting flaw discovered in the tDiary content management system, specifically within its TrackBack transmission plugin. This vulnerability affects versions 2.2.2 and earlier, making it a significant security concern for users operating these outdated systems. The flaw exists in the tb-send.rb plugin file, which handles TrackBack transmission functionality, and demonstrates how web application security can be compromised through improper input validation and output encoding mechanisms.
The technical implementation of this vulnerability stems from insufficient sanitization of user-supplied parameters within the TrackBack plugin. Attackers can exploit this weakness by manipulating the plugin_tb_url and plugin_tb_excerpt parameters, which are processed without adequate validation or encoding. These parameters likely represent the URL and excerpt content submitted during TrackBack communication, where malicious input can contain embedded script code that executes in the context of other users' browsers. The vulnerability's classification as a reflected XSS issue indicates that the malicious payload is executed when users view pages containing the injected content, rather than being stored on the server.
The operational impact of CVE-2010-0726 extends beyond simple script injection, potentially enabling attackers to perform session hijacking, defacement of web content, or redirection to malicious sites. Since tDiary is often used for personal blogging and web publishing, compromised systems could serve as entry points for broader attacks against users or as vectors for distributing malware. The vulnerability's exploitation requires minimal technical skill and can be automated, making it particularly dangerous in environments where users may not be security-aware. This flaw directly violates the principle of secure input handling and demonstrates the critical importance of proper output encoding in web applications.
Security mitigations for this vulnerability require immediate patching of affected tDiary installations to versions that properly sanitize input parameters. Organizations should implement comprehensive input validation and output encoding mechanisms, particularly for all user-supplied data. The vulnerability aligns with CWE-79, which describes cross-site scripting flaws, and corresponds to ATT&CK technique T1059.007 for script injection. Additional defensive measures include implementing content security policies, regular security audits, and monitoring for anomalous TrackBack submissions. The remediation process should also involve comprehensive testing to ensure that all plugin parameters are properly sanitized, as the vulnerability's impact can be amplified through chained attacks that exploit multiple weaknesses within the application framework.