CVE-2025-23980 in Full Circle Plugin
Summary
by MITRE • 01/31/2025
Cross-Site Request Forgery (CSRF) vulnerability in James Andrews Full Circle allows Stored XSS. This issue affects Full Circle: from n/a through 0.5.7.8.
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Analysis
by VulDB Data Team • 02/06/2025
The CVE-2025-23980 vulnerability represents a critical security flaw in the Full Circle application developed by James Andrews, specifically targeting versions ranging from an unspecified initial state through version 0.5.7.8. This vulnerability demonstrates a dangerous combination of cross-site request forgery and stored cross-site scripting weaknesses that together create a particularly severe attack vector. The flaw arises from inadequate input validation and insufficient anti-CSRF protection mechanisms within the application's web interface, allowing malicious actors to exploit the system through carefully crafted requests that can persist and execute across user sessions.
The technical implementation of this vulnerability stems from the application's failure to properly validate and sanitize user-supplied data before storing and rendering it within the web interface. When users submit content through forms or other input mechanisms, the system does not adequately verify the authenticity of requests or implement proper CSRF tokens to prevent unauthorized actions. This weakness enables attackers to inject malicious scripts into the application's database through legitimate user interactions, creating a persistent threat that can affect all users who view the compromised content. The vulnerability operates at the intersection of CWE-352 (Cross-Site Request Forgery) and CWE-79 (Cross-Site Scripting), creating a compound security risk that significantly amplifies the potential impact of exploitation.
The operational impact of this vulnerability extends beyond simple data theft or service disruption, as it provides attackers with a persistent foothold within the application environment. Once exploited, the stored XSS payload can execute in the context of any user who views the malicious content, potentially leading to session hijacking, credential theft, or further privilege escalation attacks. The attack surface is particularly concerning because it allows for the creation of malicious content that can persist across multiple user sessions, making it difficult to contain and remediate. This vulnerability directly maps to several ATT&CK techniques including T1566.001 (Phishing: Spearphishing Attachment) and T1059.007 (Command and Scripting Interpreter: JavaScript), as attackers can leverage the stored payloads to execute malicious code against unsuspecting users.
Security mitigation strategies for this vulnerability must address both the CSRF and XSS components of the flaw through comprehensive defensive measures. Organizations should implement robust anti-CSRF token mechanisms that are properly validated on all state-changing requests, while simultaneously enforcing strict input sanitization and output encoding for all user-supplied content. The application should employ Content Security Policy (CSP) headers to limit script execution and prevent unauthorized code injection. Additionally, regular security testing including automated vulnerability scanning and manual penetration testing should be conducted to identify similar weaknesses in the application's architecture. The remediation process should involve immediate patching of affected versions, implementation of proper session management controls, and establishment of a comprehensive security monitoring framework to detect and respond to potential exploitation attempts.