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HIGH

CVE-2026-19804

CVSS v3

8.8

HIGH

EPSS Score

1.0 %

exploit probability

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

The s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 260814 via the 'first_name' parameter parameter. This is due to insufficient sanitization of the first_name parameter via esc_refs(), which strips only regex backreferences and not PHP tags, before substitution into the eval'd Signup Tracking Codes template, combined with disclosure of t

Technical details

CVSS v3 Vector
3.1
Published
2026-09-25
Last Modified
2026-09-25

Frequently asked questions

What is CVE-2026-19804?

The s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 260814 via the 'first_name' parameter parameter. This is due to insufficient sanitization of the first_name parameter via esc_refs(), which strips only regex backreferences and not PHP tags, before substitution into the eval'd Signup Tracking Codes template, combined with disclosure of t

Is CVE-2026-19804 actively exploited?

Active exploitation of CVE-2026-19804 has not been confirmed. The EPSS score is 1.0%, indicating the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-19804?

CVE-2026-19804 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string 3.1.

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