CVE-2010-0797 in T3BLOG
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the T3BLOG extension 0.6.2 and earlier for TYPO3 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 05/01/2026
The CVE-2010-0797 vulnerability represents a critical cross-site scripting flaw discovered in the T3BLOG extension version 0.6.2 and earlier for the TYPO3 content management system. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is one of the most prevalent and dangerous web application security flaws. The T3BLOG extension, designed to provide blogging functionality within TYPO3, failed to properly sanitize user input, creating an exploitable condition that could allow malicious actors to execute arbitrary scripts in the context of other users' browsers. The vulnerability's impact is particularly severe because it affects the core blogging functionality of a widely-used content management system, potentially compromising thousands of websites that rely on TYPO3 for their operations.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding mechanisms within the T3BLOG extension's codebase. Attackers could exploit this flaw by crafting malicious payloads that would be stored and subsequently executed when other users viewed the affected blog content. The unspecified vectors mentioned in the description suggest that multiple entry points within the extension could be compromised, including but not limited to blog post titles, content fields, comment sections, or metadata inputs. This lack of specificity in the vulnerability description indicates that the flaw was likely present in multiple areas of the extension's code, making it particularly dangerous and difficult to fully patch without comprehensive code review. The vulnerability operates at the application layer, requiring no special privileges or access methods beyond normal user interaction with the blog functionality.
The operational impact of CVE-2010-0797 extends far beyond simple script execution, as it provides attackers with the capability to hijack user sessions, steal sensitive information, deface websites, or redirect users to malicious domains. When exploited, this vulnerability could enable attackers to perform actions such as stealing administrator credentials, modifying blog content, injecting malicious advertisements, or even creating backdoors for persistent access. The consequences are particularly dire for organizations relying on TYPO3 for their web presence, as the vulnerability affects core blogging functionality that often contains sensitive user information, comments, and administrative data. Given that TYPO3 was widely deployed across various industries including government, healthcare, and financial sectors, the potential for widespread impact was significant, with each compromised site representing a potential entry point for broader network attacks.
Organizations affected by CVE-2010-0797 should implement immediate mitigations including upgrading to T3BLOG version 0.6.3 or later, which contained the necessary patches to address the XSS vulnerability. Additionally, administrators should enforce strict input validation and output encoding practices throughout their TYPO3 installations, implementing Content Security Policy headers to limit script execution. The vulnerability aligns with ATT&CK technique T1059.007 for Command and Scripting Interpreter: JavaScript and T1566 for Phishing, as attackers could leverage the XSS to deliver malicious JavaScript payloads or redirect users to phishing sites. System administrators should also consider implementing web application firewalls to detect and block suspicious script injection attempts, while conducting thorough security audits of all TYPO3 extensions to identify similar vulnerabilities. The incident underscores the importance of maintaining up-to-date software versions and implementing robust security practices such as the principle of least privilege and regular security assessments to prevent exploitation of known vulnerabilities.