CVE-2025-31437 Overview
CVE-2025-31437 is a stored Cross-Site Scripting (XSS) vulnerability in the WP-OGP WordPress plugin by David Miller. The flaw affects all versions up to and including 1.0.5 and stems from improper neutralization of input during web page generation [CWE-79]. An authenticated attacker with high privileges can inject persistent JavaScript payloads that execute in the browsers of users who view affected pages. The vulnerability requires user interaction and results in a scope change, allowing the injected script to impact resources beyond the vulnerable component.
Critical Impact
Authenticated attackers can store malicious scripts that execute against site visitors and administrators, enabling session theft, credential harvesting, and unauthorized actions within the WordPress dashboard.
Affected Products
- David Miller WP-OGP plugin for WordPress
- All versions from initial release through 1.0.5
- WordPress sites using Open Graph Protocol metadata via WP-OGP
Discovery Timeline
- 2025-03-28 - CVE-2025-31437 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-31437
Vulnerability Analysis
The WP-OGP plugin generates Open Graph Protocol metadata tags for WordPress pages. The plugin fails to properly sanitize user-supplied input before rendering it in the HTML output. This results in a stored XSS condition where malicious payloads persist in the database and execute whenever the affected pages load.
Exploitation requires an authenticated user with elevated privileges to submit crafted input through the plugin's configuration or metadata fields. A victim must then interact with a page rendering the poisoned Open Graph tags. Because the injected script executes in the security context of the WordPress site, it can access session cookies, perform actions on behalf of the victim, and pivot to other administrative users.
Root Cause
The root cause is missing or insufficient output encoding when the plugin echoes stored configuration values into HTML <meta> tags. WordPress provides sanitization helpers such as esc_attr() and esc_html() that should wrap any dynamic value emitted into markup. WP-OGP versions through 1.0.5 do not apply these controls consistently, allowing raw HTML and JavaScript payloads to be persisted and rendered.
Attack Vector
The attack is network-reachable and requires a high-privilege authenticated session, along with user interaction to trigger execution. An attacker submits a payload such as an HTML attribute-breaking string containing an event handler into a WP-OGP configuration field. The payload is stored in the WordPress database. When any user loads a page that includes the generated Open Graph meta tags, the browser parses and executes the injected script under the site's origin. The scope change means the injected script can affect other components and users beyond the plugin itself.
See the Patchstack XSS Vulnerability Report for additional technical context.
Detection Methods for CVE-2025-31437
Indicators of Compromise
- Unexpected <script> tags, on* event handlers, or javascript: URIs embedded within Open Graph <meta> tag attributes in page source.
- Modifications to WP-OGP plugin options in the wp_options table containing HTML control characters or encoded script fragments.
- Outbound requests from visitor browsers to unfamiliar domains shortly after loading WordPress pages that render WP-OGP metadata.
Detection Strategies
- Scan rendered HTML output for anomalous content within og:* meta tag attribute values using automated web crawlers.
- Review WordPress audit logs for administrator-level updates to WP-OGP settings by accounts that do not normally manage plugin configuration.
- Inspect database entries associated with the WP-OGP plugin for payload patterns such as "><script, onerror=, or Base64-encoded JavaScript.
Monitoring Recommendations
- Enable WordPress administrative activity logging and forward events to a centralized SIEM for correlation.
- Monitor Content Security Policy (CSP) violation reports for inline script executions originating from meta tag contexts.
- Alert on new or modified administrator accounts, which may indicate post-exploitation activity following XSS-driven session theft.
How to Mitigate CVE-2025-31437
Immediate Actions Required
- Identify all WordPress installations running WP-OGP and confirm the installed version is 1.0.5 or earlier.
- Restrict administrative access to the WordPress dashboard and enforce multi-factor authentication for privileged accounts.
- Audit existing WP-OGP configuration values for previously injected payloads and remove any suspicious HTML or script content.
Patch Information
No fixed version was identified in the referenced advisory at the time of publication. Consult the Patchstack XSS Vulnerability Report and the plugin's official repository for updated release information before deploying any patch.
Workarounds
- Deactivate and remove the WP-OGP plugin until a patched release is available, and replace it with an actively maintained Open Graph plugin.
- Deploy a Web Application Firewall (WAF) rule set that blocks common XSS payload patterns targeting WordPress plugin endpoints.
- Implement a strict Content Security Policy that disallows inline scripts and restricts script sources to trusted origins.
# Disable the vulnerable plugin via WP-CLI
wp plugin deactivate wp-ogp
wp plugin delete wp-ogp
# Example restrictive CSP header (add via web server or security plugin)
# Content-Security-Policy: default-src 'self'; script-src 'self'; object-src 'none'; base-uri 'self'
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
