CVE-2025-10294

9.8 CRITICAL

📋 TL;DR

The OwnID Passwordless Login plugin for WordPress has an authentication bypass vulnerability that allows unauthenticated attackers to log in as any user, including administrators, on sites where the plugin hasn't been fully configured. This occurs because the plugin fails to properly validate the JWT authentication secret. All WordPress sites using vulnerable versions of this plugin are affected.

💻 Affected Systems

Products:
  • OwnID Passwordless Login for WordPress
Versions: All versions up to and including 1.3.4
Operating Systems: All operating systems running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: Only vulnerable when the plugin is installed but not fully configured (ownid_shared_secret is empty). Fully configured installations with a proper shared secret are not vulnerable.

⚠️ 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

Complete site takeover by unauthenticated attackers who can gain administrative access, modify content, install malicious plugins/themes, and potentially compromise the entire WordPress installation and server.

🟠

Likely Case

Unauthenticated attackers gain administrative access to vulnerable WordPress sites, allowing them to deface websites, steal sensitive data, or install backdoors for persistent access.

🟢

If Mitigated

No impact if the plugin is properly configured with a shared secret or if the vulnerable version is not installed.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

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

The vulnerability is straightforward to exploit once identified, requiring minimal technical skill to craft malicious JWT tokens.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 1.3.5 or later

Vendor Advisory: https://wordpress.org/plugins/ownid-passwordless-login/#developers

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find OwnID Passwordless Login. 4. Click 'Update Now' if available, or download version 1.3.5+ from WordPress.org and upload manually. 5. Activate the updated plugin.

🔧 Temporary Workarounds

Disable the plugin

all

Temporarily disable the vulnerable plugin until it can be updated

wp plugin deactivate ownid-passwordless-login

Set a dummy shared secret

all

Configure the plugin with any non-empty shared secret value

Update wp_options table: UPDATE wp_options SET option_value = 'temporary_secret' WHERE option_name = 'ownid_shared_secret'

🧯 If You Can't Patch

  • Immediately disable the OwnID Passwordless Login plugin via WordPress admin or command line
  • Implement web application firewall rules to block requests containing ownid authentication parameters

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin > Plugins > Installed Plugins for OwnID Passwordless Login version 1.3.4 or earlier

Check Version:

wp plugin get ownid-passwordless-login --field=version

Verify Fix Applied:

Verify plugin version is 1.3.5 or later in WordPress admin panel

📡 Detection & Monitoring

Log Indicators:

  • Unusual authentication attempts via /wp-json/ownid/ endpoints
  • Multiple failed login attempts followed by successful admin login from same IP
  • User privilege escalation logs

Network Indicators:

  • HTTP POST requests to /wp-json/ownid/v1/authenticate with JWT tokens
  • Unusual traffic patterns to admin areas from new IP addresses

SIEM Query:

source="wordpress.log" AND (uri_path="/wp-json/ownid/v1/authenticate" OR plugin="ownid-passwordless-login")

🔗 References

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