What’s Vulnerable › Vulnerabilities

CVE-2025-13620: Wp Social Login and Register Social Counter <= 3.1.3 - Missing Authorization in Cache REST Endpoints to Social Counter Tampering

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-05 · updated 2026-10-18
• Weakness: CWE-862

Description

The Wp Social Login and Register Social Counter plugin for WordPress is vulnerable to missing authorization in versions up to, and including, 3.1.3. This is due to the REST routes wslu/v1/check_cache/{type}, wslu/v1/save_cache/{type}, and wslu/v1/settings/clear_counter_cache being registered with permission_callback set to __return_true and lacking capability or nonce validation in their handlers. This makes it possible for unauthenticated attackers to clear or overwrite the social counter cache via crafted REST requests.

Affected products

• roxnor Wp Social Login and Register Social Counter: through 3.1.3

References

• https://plugins.trac.wordpress.org/changeset/3402340/wp-social/tags/3.1.4/inc/admin-rest-api.php
• https://research.cleantalk.org/cve-2025-13620/
• https://www.wordfence.com/threat-intel/vulnerabilities/id/4fa205d7-61ce-4ab9-b532-fd0b46b0f6a0?source=cve

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