CVE-2025-58874: StoryMap WordPress Plugin XSS Vulnerability

CVE-2025-58874 Overview

CVE-2025-58874 is a DOM-based Cross-Site Scripting (XSS) vulnerability in the josepsitjar StoryMap plugin (wp-storymap) for WordPress. The flaw stems from improper neutralization of user-controllable input during web page generation [CWE-79]. All plugin versions up to and including 2.1 are affected. Exploitation requires an authenticated user with low privileges and user interaction, such as clicking a crafted link. Successful exploitation executes attacker-controlled JavaScript in the victim's browser session, enabling session abuse, content manipulation, or redirection to malicious resources. The vulnerability is tracked in the Patchstack Vulnerability Report.

Critical Impact
Authenticated attackers can execute arbitrary JavaScript in a victim's browser, leading to session compromise and cross-origin impact within the affected WordPress site.

Affected Products

josepsitjar StoryMap WordPress plugin (wp-storymap)
All versions from initial release through version 2.1
WordPress sites with the StoryMap plugin installed and activated

Discovery Timeline

2025-09-05 - CVE-2025-58874 published to the National Vulnerability Database (NVD)
2026-10-05 - Last updated in NVD database

Technical Details for CVE-2025-58874

Vulnerability Analysis

The StoryMap plugin fails to properly sanitize user-controllable input before it reaches a client-side sink. Because the unsafe write occurs in the browser Document Object Model (DOM), the payload is never filtered server-side, making this a DOM-based XSS rather than a reflected or stored variant. An authenticated contributor-level account can inject HTML or JavaScript that is parsed and executed by the victim's browser when a crafted page or parameter is rendered. The scope-changed impact means the executed script runs with access to the victim's authenticated WordPress session and cookies accessible to the containing document.

Root Cause

The vulnerability traces to insecure handling of input that is later written to DOM sinks such as innerHTML, document.write, or jQuery HTML-insertion methods without encoding or sanitization. See the Patchstack Vulnerability Report for component-level technical references.

Attack Vector

An attacker crafts a malicious URL or input containing JavaScript payloads. A victim with an active WordPress session visits or interacts with the crafted content, and the plugin's client-side code injects the attacker payload into the DOM. The resulting script execution can steal session tokens, perform actions on behalf of the victim, deface pages, or pivot to further browser-based attacks.

No verified public proof-of-concept code is available. The vulnerability mechanism is described in prose only; consult the vendor advisory for technical artifacts.

Detection Methods for CVE-2025-58874

Indicators of Compromise

Unexpected <script> tags, event handlers (onerror, onload), or javascript: URIs in StoryMap-related request parameters or stored map configurations.
WordPress access logs showing requests to StoryMap endpoints with URL fragments or query strings containing encoded HTML entities or JavaScript keywords.
Browser console errors or outbound requests to unknown third-party domains from pages rendering StoryMap content.

Detection Strategies

Review web server and WordPress audit logs for anomalous requests referencing wp-storymap resources with suspicious payload characters.
Enable a Content Security Policy (CSP) in report-only mode to surface inline script execution originating from plugin pages.
Scan the WordPress database for stored StoryMap entries containing HTML tags, inline event attributes, or encoded script content.

Monitoring Recommendations

Monitor authentication events for contributor and editor accounts creating or modifying StoryMap content.
Alert on client-side errors and CSP violation reports generated by pages that render StoryMap components.
Track installed plugin versions across WordPress deployments to confirm StoryMap remains at or below version 2.1 pending vendor remediation.

How to Mitigate CVE-2025-58874

Immediate Actions Required

Deactivate the StoryMap plugin on affected WordPress sites until a patched release is available.
Audit user roles and remove unnecessary contributor or author accounts that could be used to stage XSS payloads.
Deploy a web application firewall (WAF) rule set that blocks common XSS payload patterns targeting StoryMap endpoints.

Patch Information

At the time of publication, no fixed version is listed in the NVD record. The advisory indicates the issue affects StoryMap through version 2.1. Monitor the Patchstack Vulnerability Report and the plugin's WordPress.org page for an updated release and apply it immediately once published.

Workarounds

Enforce a strict Content Security Policy that disallows inline scripts and restricts script sources to trusted origins.
Restrict access to pages rendering StoryMap content to authenticated administrators only while the plugin remains unpatched.
Use browser isolation or short-lived session cookies with HttpOnly and SameSite=Strict attributes to limit the impact of script execution.

bash

# Example WordPress CLI commands to disable the vulnerable plugin
wp plugin deactivate wp-storymap
wp plugin status wp-storymap