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s2Member® Framework (Membership, Member Level Roles, Access Capabilities, PayPal Members) < 111220 — Cross-Site Scripting

CVE-2011-5082Published · Updated

Action summary

Affected: <111220Update to 111220 or newer

All remediation steps
Watch plugin
Severity
High7.2
CVSS
7.2
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:N Privileges required
None
UI:N User interaction
None
S:C Scope
Changed
C:L Confidentiality
Low
I:L Integrity
Low
A:N Availability
None
Weakness
CWE-79 Cross-Site Scripting
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions s2member

  1. Affected< 111220
  2. Patched in111220

Update to 111220 or newer.

You are affected if you run < 111220. Version 111220 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

  1. Update to version 111220, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. 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 Chris Martin.

Cross-site scripting (XSS) vulnerability in the s2Member Pro plugin before 111220 for WordPress allows remote attackers to inject arbitrary web script or HTML via the s2member_pro_authnet_checkout[coupon] parameter (aka Coupon Code field).

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions

All 16
More vulnerabilities in s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions
SeverityVulnerabilityCVEPublished
Critical9.8Unauthenticated Remote Code Execution via 'item_name' IPN Parameter
≤260927Update to 261001
CVE-2026-86596
Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting via 'date_format' Shortcode Attribute
≤261011Update to 261017
CVE-2026-109972
High8.8Unauthenticated Remote Code Execution via 'first_name' Parameter in PayPal Proxy Return
≤260814Update to 260829
CVE-2026-19804
Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤260804Update to 260805
CVE-2026-15047
Critical9.8Unauthenticated Privilege Escalation via Account Takeover
≤260127Update to 260215
CVE-2026-1994

Same weakness (Cross-Site Scripting)

All Cross-Site Scripting
Other Cross-Site Scripting vulnerabilities
SeverityVulnerabilityCVEPublished
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
CVE-2026-120688
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
CVE-2026-125055
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
CVE-2026-119077
Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce≤5.127.0Update to 5.128.0
CVE-2026-121518

Timeline

  1. CVE published

    Severity high, CVSS 7.2

  2. 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.

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