CVE-2025-60183 in RSS Reader Plugin
Summary
by MITRE • 02/20/2026
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in silence Silencesoft RSS Reader external-rss-reader allows Stored XSS.This issue affects Silencesoft RSS Reader: from n/a through <= 0.6.
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Analysis
by VulDB Data Team • 02/27/2026
The CVE-2025-60183 vulnerability represents a critical cross-site scripting flaw in the Silencesoft RSS Reader external-rss-reader component that enables stored XSS attacks. This vulnerability arises from inadequate input validation and sanitization during the web page generation process, specifically when handling user-supplied content from RSS feeds. The flaw allows attackers to inject malicious scripts that persist in the application's database and execute whenever affected pages are rendered to users. The vulnerability is particularly concerning because it affects versions from the initial release through version 0.6, indicating a long-standing issue that has not been properly addressed. The stored nature of this XSS vulnerability means that malicious payloads remain active even after the initial injection, creating a persistent threat vector that can affect multiple users over time.
The technical implementation of this vulnerability stems from improper neutralization of input during web page generation, which directly maps to CWE-79 - Improper Neutralization of Input During Web Page Generation. When the RSS reader processes external feed content, it fails to properly sanitize or escape user-provided data before rendering it in HTML contexts. This allows attackers to embed malicious JavaScript code within RSS feed entries, which then gets executed in the browser context of any user who views the affected feed content. The vulnerability specifically affects the external-rss-reader module, suggesting that the issue occurs during the processing of external RSS feeds rather than internal application data handling. The attack vector requires an attacker to either compromise an RSS feed source or inject malicious content directly into the application's feed processing pipeline.
The operational impact of this vulnerability extends beyond simple script execution, as it provides attackers with the capability to perform session hijacking, deface web pages, steal user credentials, or redirect users to malicious sites. Users who view compromised RSS feeds become victims of the stored XSS attack, potentially exposing their browser sessions, cookies, and other sensitive information. The vulnerability affects all users of the Silencesoft RSS Reader application who access feeds through the affected external-rss-reader component, creating a broad attack surface. Given that RSS readers are commonly used to access news, blog posts, and other content sources, the potential for widespread impact increases significantly. The persistent nature of stored XSS means that once a malicious payload is injected, it continues to affect users until the application is patched and the malicious content is removed from the database.
Mitigation strategies for CVE-2025-60183 should focus on immediate input sanitization and output encoding practices. Organizations should implement comprehensive input validation that filters or escapes all user-supplied content before storage and rendering. The solution requires implementing proper HTML escaping and context-aware output encoding for all RSS feed content displayed in the application interface. Security measures should include content security policy enforcement, regular vulnerability scanning, and input validation at multiple layers of the application. The ATT&CK framework categorizes this vulnerability under T1531 - Account Access Token Hijacking and T1059 - Command and Scripting Interpreter, highlighting the potential for session manipulation and malicious code execution. Immediate patching of affected versions is crucial, while organizations should also implement network segmentation, monitor for suspicious feed content, and educate users about the risks of accessing untrusted RSS sources. The vulnerability underscores the importance of secure coding practices and input sanitization in web applications, particularly those handling external data feeds.