CVE-2025-58603

5.3 MEDIUM

📋 TL;DR

This CVE describes a missing authorization vulnerability in the Surfer SEO WordPress plugin that allows attackers to bypass access controls. It affects all versions up to 1.6.4.574, potentially enabling unauthorized users to access restricted functionality. WordPress sites using the vulnerable plugin are affected.

💻 Affected Systems

Products:
  • Surfer SEO WordPress Plugin
Versions: n/a through 1.6.4.574
Operating Systems: Any OS running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: Affects WordPress installations with the Surfer plugin installed and activated.

⚠️ 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 modify SEO settings, inject malicious content, or access sensitive plugin data, potentially compromising site integrity and SEO rankings.

🟠

Likely Case

Unauthorized users accessing plugin functionality they shouldn't have access to, potentially modifying SEO configurations or viewing restricted data.

🟢

If Mitigated

With proper access controls and authentication checks, impact would be limited to authorized users only.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: MEDIUM

Exploitation requires understanding of WordPress plugin structure and access control mechanisms.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Versions after 1.6.4.574

Vendor Advisory: https://patchstack.com/database/wordpress/plugin/surferseo/vulnerability/wordpress-surfer-plugin-1-6-4-574-broken-access-control-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel
2. Go to Plugins > Installed Plugins
3. Find Surfer SEO plugin
4. Click 'Update Now' if available
5. Alternatively, download latest version from WordPress repository and replace plugin files

🔧 Temporary Workarounds

Temporary Plugin Deactivation

all

Deactivate the plugin until patched to prevent exploitation

wp plugin deactivate surferseo

Access Restriction via .htaccess

Apache

Restrict access to plugin directories

Order deny,allow
Deny from all

🧯 If You Can't Patch

  • Implement strict network access controls to limit who can access the WordPress admin interface
  • Monitor plugin directories for unauthorized access attempts and implement additional authentication layers

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel > Plugins > Installed Plugins for Surfer SEO version

Check Version:

wp plugin list --name=surferseo --field=version

Verify Fix Applied:

Verify plugin version is greater than 1.6.4.574 in WordPress admin

📡 Detection & Monitoring

Log Indicators:

  • Unauthorized access attempts to /wp-content/plugins/surferseo/
  • Unusual plugin configuration changes from non-admin users
  • Failed authorization attempts in WordPress logs

Network Indicators:

  • HTTP requests to Surfer plugin endpoints from unauthorized IPs
  • Unusual traffic patterns to plugin-specific URLs

SIEM Query:

source="wordpress.log" AND ("surferseo" OR "surfer plugin") AND ("unauthorized" OR "access denied" OR "permission")

🔗 References

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