CVE-2025-46505 Overview
CVE-2025-46505 is a stored cross-site scripting (XSS) vulnerability in the farinspace Peekaboo WordPress plugin. The flaw affects all versions of Peekaboo up to and including 1.1. The vulnerability stems from improper neutralization of user-supplied input during web page generation, classified under [CWE-79]. Authenticated attackers with low privileges can inject persistent JavaScript payloads that execute in the browsers of site visitors and administrators. Successful exploitation can lead to session hijacking, credential theft, and unauthorized actions performed in the context of victim users.
Critical Impact
Authenticated attackers can store malicious scripts that execute across browsing sessions, enabling account takeover and content manipulation on affected WordPress sites.
Affected Products
- farinspace Peekaboo WordPress plugin, versions up to and including 1.1
- WordPress sites running the vulnerable Peekaboo plugin
- Site administrators and visitors accessing pages rendering injected content
Discovery Timeline
- 2025-04-24 - CVE CVE-2025-46505 published to the National Vulnerability Database
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-46505
Vulnerability Analysis
The Peekaboo plugin fails to sanitize or encode user-supplied input before rendering it within generated HTML output. This omission allows an attacker with low-privileged authenticated access to persist arbitrary HTML and JavaScript within plugin-controlled fields. When another user loads a page that renders the stored input, the injected script executes in the victim's browser under the site's origin. The attack requires user interaction to trigger the payload rendering. The scope change indicates that the executed script can affect resources beyond the vulnerable component itself, including administrative sessions.
Root Cause
The root cause is missing output encoding and input validation in the plugin's data-handling routines. Peekaboo accepts input from authenticated contributors or authors and writes it directly into the WordPress database without applying WordPress sanitization helpers such as wp_kses_post() or esc_html(). On retrieval, the plugin echoes stored values into HTML contexts without escaping, converting untrusted input into executable markup.
Attack Vector
An attacker with a low-privileged authenticated account submits crafted input containing HTML script tags or event-handler attributes through the vulnerable plugin interface. The payload persists in the site database. When an administrator or visitor navigates to a page that renders the injected value, the browser interprets the payload as executable code. The attacker can exfiltrate session cookies, perform CSRF-style actions against the WordPress REST API, or redirect users to attacker-controlled domains.
No public proof-of-concept exploit is currently listed for CVE-2025-46505. Technical details are available in the Patchstack XSS Vulnerability Report.
Detection Methods for CVE-2025-46505
Indicators of Compromise
- Unexpected <script> tags, onerror, onload, or javascript: URIs stored in plugin-managed database records
- Outbound HTTP requests from browsers rendering plugin content to unfamiliar external domains
- WordPress administrator sessions exhibiting unauthorized configuration or user changes shortly after viewing plugin pages
- Presence of Peekaboo plugin at version 1.1 or earlier in wp-content/plugins/peekaboo/
Detection Strategies
- Audit database rows written by the Peekaboo plugin for HTML tags or JavaScript event handlers using targeted SQL queries
- Deploy a web application firewall rule that inspects POST bodies to plugin endpoints for XSS signatures
- Monitor Content Security Policy (CSP) violation reports for inline script execution originating from plugin-rendered pages
Monitoring Recommendations
- Enable WordPress audit logging to capture content changes made by low-privileged accounts
- Track access patterns to plugin administrative endpoints for anomalous submission volumes
- Correlate browser telemetry with server-side plugin activity to identify successful payload execution
How to Mitigate CVE-2025-46505
Immediate Actions Required
- Deactivate and remove the Peekaboo plugin from WordPress installations until a patched release is confirmed
- Review all Peekaboo-managed content and remove any embedded scripts or suspicious markup
- Rotate credentials and invalidate active sessions for administrator accounts that accessed pages rendering plugin data
- Restrict low-privileged account creation and audit existing contributor and author accounts
Patch Information
As of the last NVD update, the vulnerability affects Peekaboo through version 1.1 with no vendor patch referenced in the advisory. Consult the Patchstack advisory for the latest remediation guidance from farinspace.
Workarounds
- Uninstall the Peekaboo plugin and replace its functionality with an actively maintained alternative
- Enforce a strict Content Security Policy that blocks inline scripts and unauthorized script sources
- Deploy WAF rules that filter XSS payloads targeting plugin endpoints
- Limit publishing capabilities to trusted accounts and require multi-factor authentication for all authenticated users
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
