CVE-2025-49946

7.1 HIGH

📋 TL;DR

This vulnerability allows attackers to inject malicious scripts into web pages generated by the Auto Login After Registration WordPress plugin. When exploited, it enables reflected cross-site scripting attacks that can steal user credentials or perform unauthorized actions. All WordPress sites using vulnerable versions of this plugin are affected.

💻 Affected Systems

Products:
  • WordPress Auto Login After Registration Plugin
Versions: All versions up to and including 1.0.0
Operating Systems: Any OS running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: Requires WordPress installation with the vulnerable plugin enabled. No special configuration needed for exploitation.

⚠️ Manual Verification Required

This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.

Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).

🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.

Recommended Actions:
  1. Review the CVE details at NVD
  2. Check vendor security advisories for your specific version
  3. Test if the vulnerability is exploitable in your environment
  4. Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Attackers could steal administrator credentials, take over WordPress sites, install backdoors, or redirect users to malicious sites, potentially leading to complete site compromise.

🟠

Likely Case

Attackers steal user session cookies or credentials, perform unauthorized actions on behalf of users, or deface websites through injected content.

🟢

If Mitigated

With proper input validation and output encoding, the vulnerability would be prevented, and impact would be limited to failed exploitation attempts.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: LIKELY
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

Reflected XSS vulnerabilities are commonly exploited and require minimal technical skill. Attackers can craft malicious URLs containing JavaScript payloads.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 1.0.1 or later

Vendor Advisory: https://patchstack.com/database/Wordpress/Plugin/auto-login-after-registration/vulnerability/wordpress-auto-login-after-registration-plugin-1-0-0-cross-site-scripting-xss-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Auto Login After Registration'. 4. Click 'Update Now' if available. 5. If no update available, deactivate and delete the plugin, then install the latest version from WordPress repository.

🔧 Temporary Workarounds

Disable Plugin

all

Temporarily disable the vulnerable plugin until patched version is available

wp plugin deactivate auto-login-after-registration

Web Application Firewall Rules

all

Implement WAF rules to block XSS payloads targeting the vulnerable endpoint

🧯 If You Can't Patch

  • Implement Content Security Policy (CSP) headers to restrict script execution
  • Use web application firewall to filter malicious input and block exploitation attempts

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel → Plugins → Installed Plugins for 'Auto Login After Registration' version 1.0.0 or earlier

Check Version:

wp plugin get auto-login-after-registration --field=version

Verify Fix Applied:

Verify plugin version is 1.0.1 or later in WordPress admin panel, or test with safe XSS payloads to confirm proper input sanitization

📡 Detection & Monitoring

Log Indicators:

  • Unusual GET/POST requests containing JavaScript payloads
  • Multiple failed login attempts from unexpected sources
  • Requests to plugin-specific endpoints with suspicious parameters

Network Indicators:

  • HTTP requests with encoded JavaScript in query parameters
  • Traffic patterns showing users being redirected to malicious sites

SIEM Query:

source="wordpress.log" AND ("auto-login-after-registration" OR "xss" OR "script" OR "alert(")

🔗 References

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