CVE-2025-46480 Overview
CVE-2025-46480 is a stored Cross-Site Scripting (XSS) vulnerability in the Padam Shankhadev Nepali Post Date WordPress plugin. The flaw affects all versions up to and including 5.1.1 and stems from improper neutralization of user-supplied input during web page generation [CWE-79].
An authenticated attacker with low privileges can inject malicious JavaScript that persists in the application. When other users load the affected page, the payload executes in their browsers within the site's origin. Because the vulnerability crosses a security scope boundary, it can affect users beyond the attacker's own privilege level.
Critical Impact
Authenticated attackers can inject persistent JavaScript that executes in the browsers of site visitors and administrators, enabling session theft, defacement, and further account compromise.
Affected Products
- Padam Shankhadev Nepali Post Date plugin for WordPress
- All versions from n/a through 5.1.1
- WordPress installations with the nepali-post-date plugin active
Discovery Timeline
- 2025-04-24 - CVE-2025-46480 published to the National Vulnerability Database (NVD)
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-46480
Vulnerability Analysis
The vulnerability is a stored Cross-Site Scripting flaw in the Nepali Post Date plugin. The plugin fails to properly sanitize or escape user-controlled input before persisting it and rendering it back into WordPress pages.
Stored XSS is more impactful than reflected XSS because the payload lives in the database. Every subsequent request that renders the affected content triggers the malicious script. Administrators visiting the compromised page can have their sessions hijacked, leading to full site takeover.
Exploitation requires authenticated access with low privileges and some user interaction. The scope change indicates that the injected script executes in a context different from the attacker's, such as an administrator's browser session.
Root Cause
The root cause is missing output encoding and input sanitization in the plugin's page generation logic. WordPress provides functions such as esc_html(), esc_attr(), wp_kses(), and sanitize_text_field() for this purpose. The vulnerable plugin does not consistently apply these controls to input that reaches the DOM.
Attack Vector
An attacker with a low-privileged authenticated account submits input containing JavaScript through a plugin field that lacks sanitization. The payload is stored in the WordPress database. When a higher-privileged user, such as an editor or administrator, views the affected page, the browser parses and executes the injected script under the site's origin.
Refer to the Patchstack XSS Vulnerability Advisory for technical details on the injection point.
Detection Methods for CVE-2025-46480
Indicators of Compromise
- Unexpected <script> tags, on* event handlers, or javascript: URIs stored in wp_posts, wp_postmeta, or plugin-specific tables
- Outbound requests from administrator browsers to unfamiliar domains shortly after loading pages containing plugin-rendered content
- New administrator accounts, altered user roles, or unauthorized plugin installations following visits to affected pages
Detection Strategies
- Audit WordPress database tables for HTML or JavaScript payloads in fields associated with the nepali-post-date plugin
- Deploy a Web Application Firewall (WAF) rule to identify XSS payload patterns targeting plugin endpoints
- Review web server access logs for POST requests to plugin administration URLs from low-privileged accounts
Monitoring Recommendations
- Enable WordPress activity logging to capture content changes made by contributor and author accounts
- Monitor Content Security Policy (CSP) violation reports for inline script execution attempts
- Alert on administrator session activity originating from anomalous IP addresses or user-agents
How to Mitigate CVE-2025-46480
Immediate Actions Required
- Deactivate and remove the Nepali Post Date plugin until a patched version is confirmed available
- Audit all user-generated content rendered by the plugin and remove any suspicious HTML or JavaScript
- Rotate WordPress administrator passwords and invalidate active sessions to contain potential compromise
- Review recently created accounts and elevated privilege changes for signs of exploitation
Patch Information
No patched version is identified in the available advisory data. The vulnerability affects all releases through version 5.1.1. Consult the Patchstack advisory for updates on remediation status.
Workarounds
- Restrict plugin administrative functionality to trusted administrator accounts only
- Implement a strict Content Security Policy that blocks inline scripts and unauthorized external domains
- Place the WordPress site behind a WAF configured with rulesets that identify stored XSS payloads
- Replace the plugin with a maintained alternative that provides equivalent date localization functionality
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
