CVE-2026-32570 in Progressify Plugin
Summary
by MITRE • 10/06/2026
Unauthenticated Cross Site Scripting (XSS) in Progressify - Progressive Web App (PWA) <= 1.6.0 versions.
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Analysis
by VulDB Data Team • 10/06/2026
The vulnerability identified as an unauthenticated cross-site scripting flaw within the Progressify progressive web application, specifically affecting versions up to and including 1.6.0, represents a significant security risk for users of this software platform. Cross-site scripting is categorized under CWE-79 in the Common Weakness Enumeration framework, which defines it as improper neutralization of input during web page generation. In this specific context, the flaw allows an attacker who does not need to authenticate or possess valid credentials to inject malicious client-side scripts into pages viewed by other users. This lack of authentication requirement elevates the severity of the vulnerability, as any internet user can potentially exploit it without prior access privileges, making it a high-risk issue for public-facing applications that rely on trust and data integrity.
The technical mechanism behind this flaw typically involves insufficient validation or encoding of user-supplied input before it is rendered in the browser environment. When a victim visits a compromised page containing the injected script, the malicious code executes within the context of the application's domain. This execution grants the attacker access to sensitive information such as session cookies, local storage data, and potentially administrative functions if the victim has elevated privileges. The impact extends beyond simple data theft; attackers can perform actions on behalf of the user, deface websites, or redirect users to malicious sites designed for phishing attacks. Because this is a progressive web application, the attack vector may also leverage service workers or other PWA-specific features that have broader access to device resources compared to standard browser tabs, potentially increasing the scope and impact of the compromise.
From an operational perspective, successful exploitation can lead to severe consequences including account takeover, data exfiltration, and reputational damage for the organization hosting the application. The unauthenticated nature means that automated scanning tools or malicious actors can easily discover and exploit this vulnerability across large user bases without needing complex social engineering tactics to obtain credentials first. This significantly lowers the barrier to entry for attackers, increasing the likelihood of widespread compromise. Furthermore, since progressive web applications often cache content locally on devices, persistent scripts could remain active even after the initial session ends, leading to long-term unauthorized access or continuous data collection from unsuspecting users over extended periods.
Mitigation strategies must focus on rigorous input validation and output encoding practices within the application codebase. Developers should implement strict allow-listing for acceptable inputs rather than relying solely on block lists of known malicious patterns. All user-supplied data rendered in HTML, JavaScript, or CSS contexts must be properly encoded to ensure that browsers interpret it as data rather than executable code. Additionally, implementing Content Security Policy headers can provide a robust defense-in-depth layer by restricting the sources from which scripts are allowed to load and execute. Upgrading to version 1.6.1 or later is critical if such a patch exists, as vendors typically address these issues in subsequent releases through code hardening and enhanced security controls aligned with OWASP guidelines for preventing injection flaws.