CVE-2024-49672 in Google Docs RSVP Plugin
Summary
by MITRE • 10/29/2024
Cross-Site Request Forgery (CSRF) vulnerability in giffordcheung Google Docs RSVP google-docs-rsvp-guestlist allows Stored XSS.This issue affects Google Docs RSVP: from n/a through <= 2.0.1.
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Analysis
by VulDB Data Team • 04/07/2026
This cross-site request forgery vulnerability in the Google Docs RSVP plugin represents a critical security flaw that enables attackers to execute malicious scripts through manipulated requests. The vulnerability exists within the google-docs-rsvp-guestlist component and specifically affects versions up to and including 2.0.1. The flaw allows for stored cross-site scripting attacks where malicious payloads can be permanently stored on the server and subsequently executed when users access affected pages. This type of vulnerability falls under CWE-352, which specifically addresses cross-site request forgery issues in web applications. The security implications are severe as attackers can exploit this weakness to manipulate user sessions, steal sensitive information, or perform unauthorized actions on behalf of authenticated users.
The technical execution of this vulnerability occurs through the manipulation of request parameters that are processed by the plugin's backend components. When legitimate users interact with the Google Docs RSVP functionality, the maliciously crafted requests can be submitted through the plugin's form handling mechanisms. These requests bypass normal security checks and are stored within the application's data storage, making the XSS payload persistent across user sessions. The vulnerability stems from inadequate validation and sanitization of input data within the plugin's processing pipeline, allowing attackers to inject malicious JavaScript code that executes in the context of other users' browsers. This stored XSS scenario creates a persistent threat where the malicious code can affect any user who accesses the compromised application features.
The operational impact of this vulnerability extends beyond simple script execution, creating potential for significant data breaches and unauthorized access. Attackers can leverage this weakness to access user credentials, manipulate guest list data, and potentially gain administrative privileges within the plugin's functionality. The vulnerability's persistence means that once exploited, the malicious code continues to execute for all affected users until the plugin is updated or the malicious entries are manually removed. This creates a sustained threat vector that can be used to monitor user activities, harvest session cookies, and conduct further attacks against the compromised system. The issue affects not only individual user data but also the integrity of the entire Google Docs RSVP application ecosystem, potentially compromising the trust users place in the platform.
Mitigation strategies for this vulnerability should focus on immediate patching of the affected plugin version to address the CSRF and XSS flaws. System administrators should implement input validation and output encoding mechanisms to prevent malicious code injection, while also ensuring that proper authentication and authorization checks are in place. The implementation of anti-CSRF tokens within all form submissions will help prevent unauthorized request execution, while content security policies should be configured to limit script execution capabilities. Additionally, regular security audits of third-party plugins and components are essential to identify similar vulnerabilities before they can be exploited. Organizations should also consider implementing web application firewalls to detect and block malicious requests attempting to exploit this vulnerability. The remediation process must include thorough testing to ensure that the applied fixes do not introduce regressions in the plugin's functionality while maintaining the security posture of the overall system. This vulnerability demonstrates the critical importance of maintaining up-to-date security measures and proper validation of all user inputs in web applications, aligning with ATT&CK technique T1059.001 for command and scripting interpreter and T1566.002 for spearphishing attachment.