s2Member <= 260927 - Unauthenticated Remote Code Execution via 'item_name' IPN Parameter
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
- Exploited
- Public exploit code, no confirmed attacks
- Fix
- No fix listed
- Who is exposed
- Not reported
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- Published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 54/100 · provisional
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- 1 proof of concept on GitHub
Summary
The s2Member plugin for WordPress has a flaw in how it processes the 'item_name' parameter, which lets an attacker insert PHP code into an email template. An attacker with custom-level access or higher could use this to run arbitrary code on the affected server.
Read the original description
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.
Timeline
- CVE published
- First seen by cve.now
- Posted on X by cve.now1 day
- Exploit code on GitHub
thiscitze/cve-2026-86596-poc
Affected versions
- clavaque s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions
through 260927
Evidence 10
- Exploit
- Link
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Corrections
None so far.
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