critical CVSS 9.8

CVE-2024-5871·PHP vulnerability

The WooCommerce - Social Login plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 2.6.2 via deserialization of untrusted input from the 'woo_slg_verify' vulnerable parameter. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable software. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.

Severity
critical
Software
PHP
Fixed in
2.6.3
Published
2024-06-15

Affected versions

Until: 2.6.3

Fixed in: 2.6.3

How to fix this CVE

Update the WooCommerce - Social Login plugin to version 2.6.3 or later to patch the PHP Object Injection vulnerability in the 'woo_slg_verify' parameter. This vulnerability allows unauthenticated attackers to inject malicious PHP objects, which could lead to arbitrary file deletion, data exfiltration, or remote code execution if additional POP chains are available on the server. Immediately apply this update and audit your WordPress environment for signs of compromise.

sudo dnf upgrade php php-common php-cli -y

Defensia detects this vulnerability

What an exploitation attempt looks like

Sample log line indicative of exploitation attempts:

POST|GET.*woo_slg_verify.*=.*O:[0-9]+:.*\{.*s:[0-9]+:.*

WAF mitigation (if patching is not yet possible)

Add this rule to your WAF to block exploitation attempts while you schedule the patch. 

Block HTTP requests containing the 'woo_slg_verify' parameter with serialized PHP object payloads (pattern: O:\d+:".*"). Implement input validation to reject any request where woo_slg_verify contains PHP serialization markers (O:, a:, s:, etc.).

How to check if you are affected

  1. Check if WooCommerce - Social Login plugin is installed: grep -r 'woo_slg' /var/www/html/wp-content/plugins/
  2. Verify the current plugin version: grep -i 'Version:' /var/www/html/wp-content/plugins/woo-social-login/woo-social-login.php | head -1
  3. Search web server logs for requests containing 'woo_slg_verify' parameter: grep -i 'woo_slg_verify' /var/log/apache2/access.log /var/log/nginx/access.log
  4. Confirm the patch by verifying plugin version is 2.6.3 or higher in WordPress admin dashboard under Plugins

FAQ

What is CVE-2024-5871?

CVE-2024-5871 is a critical PHP Object Injection vulnerability in the WooCommerce - Social Login plugin that allows unauthenticated attackers to deserialize untrusted input through the 'woo_slg_verify' parameter, potentially enabling remote code execution if exploited alongside other vulnerabilities on the target system.

Is CVE-2024-5871 being actively exploited?

No, CVE-2024-5871 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog and no public exploits have been disclosed, though organizations should still patch immediately due to the critical nature of object injection vulnerabilities.

What versions of the WooCommerce - Social Login plugin are affected by CVE-2024-5871?

All versions up to and including 2.6.2 are vulnerable; version 2.6.3 and later contain the fix.

How do I check if my server is vulnerable to CVE-2024-5871?

Use: grep -i 'Version:' /var/www/html/wp-content/plugins/woo-social-login/woo-social-login.php to determine the installed plugin version; if it is 2.6.2 or lower, your installation is vulnerable.

Does Defensia detect CVE-2024-5871?

Yes — Defensia's CVE advisory scanner compares installed package versions against the NVD database. If the WooCommerce - Social Login plugin is installed on a monitored server, CVE-2024-5871 will appear in your dashboard with remediation steps.

Related PHP CVEs

CVE-2025-25174CVSS 10Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in beeteam368 BeeTeam368 Extensions beeteam368-extensions allows PHP Local File Inclusion.This issue affects BeeTeam368 Extensions: from n/a through <= 1.9.4.
CVE-2025-46348CVSS 10YesWiki is a wiki system written in PHP. Prior to version 4.5.4, the request to commence a site backup can be performed and downloaded without authentication. The archives are created with a predictable filename, so a malicious user could create and download an archive without being authenticated. This could result in a malicious attacker making numerous requests to create archives and fill up the file system, or by downloading the archive which contains sensitive site information. This issue has been patched in version 4.5.4.
CVE-2026-39337CVSS 10ChurchCRM is an open-source church management system. Prior to 7.1.0, critical pre-authentication remote code execution vulnerability in ChurchCRM's setup wizard allows unauthenticated attackers to inject arbitrary PHP code during the initial installation process, leading to complete server compromise. The "$dbPassword" variable is not sanitized. This vulnerability exists due to an incomplete fix for CVE-2025-62521. This vulnerability is fixed in 7.1.0.
CVE-2025-62521CVSS 10ChurchCRM is an open-source church management system. Prior to version 5.21.0, a pre-authentication remote code execution vulnerability in ChurchCRM's setup wizard allows unauthenticated attackers to inject arbitrary PHP code during the initial installation process, leading to complete server compromise. The vulnerability exists in `setup/routes/setup.php` where user input from the setup form is directly concatenated into a PHP configuration template without any validation or sanitization. Any parameter in the setup form can be used to inject PHP code that gets written to `Include/Config.php`, which is then executed on every page load. This is more severe than typical authenticated RCE vulnerabilities because it requires no credentials and affects the installation process that administrators must complete. Version 5.21.0 patches the issue.
CVE-2024-5932CVSS 10The GiveWP – Donation Plugin and Fundraising Platform plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.14.1 via deserialization of untrusted input from the 'give_title' parameter. This makes it possible for unauthenticated attackers to inject a PHP Object. The additional presence of a POP chain allows attackers to execute code remotely, and to delete arbitrary files.

References

Track CVEs across your fleet automatically

Defensia scans your Linux servers and tells you exactly which ones are running vulnerable versions — including CVE-2024-5871. Free for 1 server.

Get started free