Answer in brief
CVE-2026-86596 records a Critical severity (CVSS 9.8) vulnerability in s2Member <= 260927 - Unauthenticated Remote Code Execution via 'item_name' IPN Parameter. The current sources do not mark it as known exploited. The current feed maps clavaque/s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps clavaque/s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| clavaque/s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptionsgeneric | >=0 <=260927 | Not reported |
Published upstream
Nov 2, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 2, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 2, 2026
The s2Member plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, <= 260927 via the 'item_name' parameter parameter. This is due to insufficient sanitization in strip_php_tags_deep(), which only strips literal '<?' sequences, combined with a post-interpolation placeholder cleanup that reassembles a valid '<?php' opener after the attacker-controlled value has already been embedded in the email template. This makes it possible for authenticated attackers, with custom-level access and above, to execute code on the server.
Quoted source text, attributed separately from HOL analysis.