CVE-2025-31444 Overview
CVE-2025-31444 is a Cross-Site Request Forgery (CSRF) vulnerability [CWE-352] in the youtag ShowTime Slideshow plugin for WordPress. The flaw affects all versions up to and including 1.6. Attackers can leverage the CSRF weakness to inject persistent JavaScript payloads, producing a Stored Cross-Site Scripting (XSS) condition. Successful exploitation requires tricking an authenticated administrator into clicking a crafted link or visiting a malicious page. Once the payload is stored, every visitor who loads the affected page executes attacker-controlled script in their browser session.
Critical Impact
Attackers can chain CSRF and Stored XSS to hijack administrator sessions, escalate privileges, or distribute malware to site visitors through a single forged request.
Affected Products
- youtag ShowTime Slideshow WordPress plugin
- All versions from n/a through 1.6
- WordPress sites with the plugin active and accessible administrators
Discovery Timeline
- 2025-03-28 - CVE-2025-31444 published to NVD
- 2026-04-23 - Last updated in NVD database
Technical Details for CVE-2025-31444
Vulnerability Analysis
The ShowTime Slideshow plugin exposes state-changing administrative endpoints without proper CSRF protection. The endpoints accept content submissions used to render slideshow elements but do not validate request origin through anti-CSRF tokens such as WordPress nonces. Because the responses incorporate user-supplied input into rendered HTML without sufficient output encoding, injected script persists in the site database. The result is a chained CSRF-to-Stored-XSS condition tracked under [CWE-352].
Root Cause
The root cause is missing or insufficient nonce verification on plugin actions that write data accessible to other users. WordPress provides wp_verify_nonce() and check_admin_referer() to validate request authenticity, but the vulnerable handlers do not enforce these checks. The absence of contextual output escaping on the stored content compounds the issue and converts a forged write into a persistent script execution sink.
Attack Vector
Exploitation requires user interaction from an authenticated administrator. An attacker hosts a page containing a crafted form or fetch request targeting the vulnerable plugin endpoint. When the administrator visits the page, the browser submits the request with valid session cookies, and the malicious payload is stored. Subsequent page loads execute the injected JavaScript in the browser of any visitor, including other administrators.
No verified exploitation code is publicly available. See the Patchstack CVE Analysis for additional technical context.
Detection Methods for CVE-2025-31444
Indicators of Compromise
- Unexpected <script> tags, event handlers, or obfuscated JavaScript embedded in slideshow content fields stored by the plugin.
- Administrator activity logs showing slideshow configuration changes from unfamiliar referrers or shortly after browsing external links.
- Outbound network connections from visitor browsers to unknown domains after loading pages that render slideshow content.
Detection Strategies
- Audit the WordPress database tables that store slideshow content for HTML markup, especially <script>, onerror=, or javascript: URIs.
- Review web server access logs for POST requests to ShowTime Slideshow admin endpoints lacking valid Referer headers or originating from external domains.
- Deploy a Web Application Firewall (WAF) rule that inspects requests to the plugin for missing or invalid WordPress nonces.
Monitoring Recommendations
- Enable WordPress audit logging to capture plugin configuration changes with timestamps, source IPs, and acting user accounts.
- Monitor for new or modified administrator accounts and unexpected privilege changes following suspicious slideshow edits.
- Alert on Content Security Policy (CSP) violations reported by browsers loading affected pages, which often indicate injected script execution.
How to Mitigate CVE-2025-31444
Immediate Actions Required
- Deactivate and remove the ShowTime Slideshow plugin until a vendor-supplied patch above version 1.6 is confirmed available.
- Inspect slideshow content and the WordPress database for injected scripts and remove any unauthorized payloads.
- Rotate administrator credentials and invalidate active sessions to limit residual access from prior exploitation.
Patch Information
No fixed version is currently identified in the public advisory. The vulnerability affects all versions through 1.6. Track the Patchstack CVE Analysis for updates on a vendor patch.
Workarounds
- Restrict administrator access to trusted networks using IP allowlisting at the web server or WAF layer.
- Require administrators to use isolated browser profiles that do not visit untrusted sites during authenticated sessions.
- Enforce a strict Content Security Policy that disallows inline scripts to reduce the impact of stored payloads.
# Example WordPress CLI command to deactivate the vulnerable plugin
wp plugin deactivate showtime-slideshow
wp plugin delete showtime-slideshow
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
