CVE-2026-71368 in F-RevoCRM
Summary
by MITRE • 08/20/2026
F-RevoCRM contains a cross-site scripting vulnerability. If a user views a crafted page while logged in to the affected product, unintended operations may be performed.
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Analysis
by VulDB Data Team • 08/20/2026
The identified vulnerability within F-RevoCRM represents a classic Cross-Site Scripting (XSS) flaw that stems from insufficient validation and sanitization of user-supplied input before it is processed by the application's backend or rendered in the client-side interface. This specific weakness allows an attacker to inject malicious scripts, typically written in JavaScript, into web pages viewed by other users. The core technical failure lies in the application's inability to distinguish between legitimate data and executable code when processing inputs that are subsequently reflected back to the browser without proper encoding. When a victim user views a crafted page containing this injected payload while authenticated with active session credentials, their browser executes the script within the security context of the F-RevoCRM domain. This execution environment grants the malicious script access to sensitive data stored in cookies or local storage, such as authentication tokens, personal information, and administrative settings, effectively bypassing same-origin policy protections that are designed to isolate content from different sources.
The operational impact of this vulnerability is significant due to its potential for session hijacking and unauthorized action execution. Since the attack requires the victim to be logged in, the injected script can perform actions on behalf of the authenticated user with whatever privileges they possess. This could range from defacing the application interface to more severe consequences such as stealing sensitive business data, modifying CRM records, or initiating financial transactions if supported by the platform. The attacker does not need direct access to the server; instead, they rely on social engineering tactics to lure victims into visiting a maliciously crafted URL or webpage that contains the exploit code. This vector makes the vulnerability particularly dangerous in enterprise environments where employees may inadvertently click on phishing links disguised as legitimate communications related to customer management tasks.
From a classification perspective, this flaw aligns with CWE-79, which describes Improper Neutralization of Input During Web Page Generation commonly known as Cross-site Scripting. The attack mechanism also maps directly to the MITRE ATT&CK framework under technique T1059, specifically Command and Scripting Interpretation via JavaScript, and can be associated with T1534 for Internal Spearphishing if used in targeted campaigns against specific employees. Understanding these mappings helps security teams prioritize remediation efforts based on established industry standards that define the severity and exploitation patterns of such vulnerabilities. The persistence of this issue indicates a gap in the secure software development lifecycle, particularly during the input validation phase where developers must ensure that all dynamic content is properly escaped before being rendered to the end-user interface.
Mitigation strategies for this vulnerability require both immediate technical fixes and long-term architectural improvements. At the application level, developers must implement strict output encoding based on the context in which data is inserted, such as HTML body, attribute values, or JavaScript blocks. Utilizing a robust Content Security Policy (CSP) header can significantly reduce the impact of any successful XSS attack by restricting the sources from which scripts are allowed to load and execute. Additionally, implementing HttpOnly flags on session cookies prevents client-side scripts from accessing them, thereby mitigating session hijacking risks even if an injection succeeds. On a broader organizational level, integrating static application security testing (SAST) and dynamic application security testing (DAST) tools into the CI/CD pipeline can help detect such input validation failures early in development. Regular penetration testing focused on web application vulnerabilities is also essential to identify and remediate similar flaws before they can be exploited by malicious actors targeting critical business infrastructure.