What’s Vulnerable › Vulnerabilities

CVE-2026-4409: Subscribe To Comments Reloaded <= 240119 - Improper Authorization to Unauthenticated Arbitrary Subscription Management

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-05 · updated 2026-06-17
• Weakness: CWE-200

Description

The Subscribe To Comments Reloaded plugin for WordPress is vulnerable to unauthorized modification of data due to a leaked secret key and usage of a weak hash generation algorithm in all versions up to, and including, 240119. This makes it possible for unauthenticated attackers to extract the global key from any public post page, forge authorization keys and manage comment subscription preferences for arbitrary users

Affected products

• WPKube Subscribe To Comments Reloaded (WordPress plugin): through 240119

References

• https://plugins.trac.wordpress.org/browser/subscribe-to-comments-reloaded/tags/240119/templates/user.php#L37
• https://plugins.trac.wordpress.org/browser/subscribe-to-comments-reloaded/tags/240119/utils/stcr_utils.php#L164
• https://plugins.trac.wordpress.org/browser/subscribe-to-comments-reloaded/tags/240119/wp_subscribe_reloaded.php#L1613
• https://www.wordfence.com/threat-intel/vulnerabilities/id/91f9235e-f578-475f-92c3-34062d6d1e3d?source=cve

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