Description

Unauthenticated Cross Site Scripting (XSS) in Events Made Easy <= 3.2.5 versions.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "7.1",
  "pubDate": "2026-08-24T12:16:50.473Z",
  "pubdate": "2026-08-24T12:16:50.473Z",
  "executiveSummary": "An unauthenticated Cross-Site Scripting (XSS) vulnerability has been identified in the Events Made Easy plugin, specifically affecting versions 3.2.5 and below. This security flaw enables remote attackers to inject malicious client-side scripts, typically JavaScript, into web pages rendered to other users visiting the affected WordPress site. The primary impact of this vulnerability includes potential session hijacking, arbitrary redirection, defacement, or the execution of unauthorized actions within the context of a victim's browser session. The affected systems are WordPress installations utilizing vulnerable versions of the Events Made Easy plugin. The risk implications are severe for platforms with authenticated users, as successful exploitation against administrative roles can lead to full site compromise. The attacker capabilities required are minimal, needing only network access to the target web application to transmit crafted HTTP requests containing the malicious payload. Exploitation requirements do not involve prior authentication or privileged access, lowering the barrier for potential threat actors to execute arbitrary script injection attacks against unsuspecting visitors and administrators alike.",
  "technicalDetails": "The vulnerability is rooted in insufficient input sanitization and output encoding within the Events Made Easy plugin affecting versions 3.2.5 and below. Specifically, the vulnerable component fails to properly validate and escape user-supplied parameters before reflecting them back in HTTP responses or storing them within the application state. This architectural oversight allows an unauthenticated adversary to supply malicious payloads via HTTP request parameters that are subsequently processed and rendered by the application.\nThe attack flow begins when an attacker crafts a malicious URL or HTTP request containing malicious script payloads targeting vulnerable input fields or endpoints exposed by the Events Made Easy plugin. Because the application lacks proper sanitization routines and fails to implement contextual output encoding, the injected payload is accepted by the server. When a victim accesses the crafted URL or interacts with the compromised component, the server reflects or outputs the unsanitized input directly into the Document Object Model (DOM) of the victim's browser.\nNetwork exposure for this vulnerability is remote, as the vulnerable endpoints are accessible over standard web protocols (HTTP/HTTPS) without requiring authentication or specific privileges. The payload behavior executes within the security context of the victim's browser session, granting the injected script access to Document cookies, session storage, and the ability to perform arbitrary DOM manipulations or initiate unauthorized API requests on behalf of the user.\nPost-exploitation impact depends heavily on the privilege level of the targeted user. If an unauthenticated attacker successfully targets an authenticated administrator or high-privileged user via reflected or stored XSS vectors, the executing payload can perform administrative actions such as creating new rogue administrator accounts, modifying system configurations, or injecting additional persistent malware into the underlying WordPress environment, ultimately achieving complete system compromise."
}