s2Member <= 260127 — Unauthenticated Privilege Escalation via Account Takeover
CVE-2026-1994Published · Updated Action summary
Affected: ≤260127Update to 260215 or newer
All remediation steps- Severity
- Critical9.8
- CVSS
- 9.8CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
- Weakness
- CWE-269 Privilege Escalation
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
- Affected≤ 260127
- Patched in260215
Update to 260215 or newer.
You are affected if you run ≤ 260127. Version 260215 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 260215, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Alyudin Nafiie.
The s2Member plugin for WordPress is vulnerable to privilege escalation via account takeover in all versions up to, and including, 260127. This is due to the plugin not properly validating a user's identity prior to updating their password. This makes it possible for unauthenticated attackers to change arbitrary user's passwords, including administrators, and leverage that to gain access to their account.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions
All 16| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Critical9.8 | Unauthenticated Remote Code Execution via 'item_name' IPN Parameter ≤260927Update to 261001 | CVE-2026-86596 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting via 'date_format' Shortcode Attribute ≤261011Update to 261017 | CVE-2026-109972 | |
| High8.8 | Unauthenticated Remote Code Execution via 'first_name' Parameter in PayPal Proxy Return ≤260814Update to 260829 | CVE-2026-19804 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting ≤260804Update to 260805 | CVE-2026-15047 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode ≤251005Update to 260101 | CVE-2025-13732 |
- Critical9.8Unauthenticated Remote Code Execution via 'item_name' IPN Parameter
≤260927Update to 261001
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting via 'date_format' Shortcode Attribute
≤261011Update to 261017
- High8.8Unauthenticated Remote Code Execution via 'first_name' Parameter in PayPal Proxy Return
≤260814Update to 260829
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤260804Update to 260805
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
≤251005Update to 260101
Same weakness (Privilege Escalation)
All Privilege Escalation| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header | CVE-2026-120688 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission | CVE-2026-125055 | |
| Critical9.8 | Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter | CVE-2026-119077 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter | CVE-2026-121518 |
- High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup
≤5.25.25Update to 5.26.45
- Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder
≤1.0.2Update to 1.1
- Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System
≤3.3.9Update to 3.4.0
- Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce
≤5.127.0Update to 5.128.0
Timeline
CVE published
Severity critical, CVSS 9.8
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.