ProfilePress <= 4.16.12 - Missing Authorization to Authenticated (Subscriber+) Inactive Membership Plan Subscription
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
The Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content – ProfilePress plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 4.16.12. This is due to the 'process_checkout' function not properly enforcing the plan active status check when a 'change_plan_sub_id' parameter is provided. This makes it possible for authenticated attackers, with Subscriber-level access and above, to subscribe to inactive membership plans by supplying an arbitrary 'change_plan_sub_id' value in the checkout request.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| properfraction | Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content – ProfilePress | up to 4.16.12 | — | No fix listed | CNA |
- Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content – ProfilePress Vendorproperfraction Affected up to 4.16.12 Fixed in — No fix listed CNA
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:properfraction:profilepress:*:*:*:*:*:*:*:* | — | — | properfraction |
- cpe:2.3:a:properfraction:profilepress:*:*:*:*:*:*:*:* Versions — — ·properfraction
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-4949
- 2026-10-03 Alias added: GHSA-9wp3-36f6-c335
References
Other 7
- https://www.wordfence.com/threat-intel/vulnerabilities/id/4cc29d32-2727-42df-bd42-2caf0f182c0e?source=cve
- https://plugins.trac.wordpress.org/browser/wp-user-avatar/tags/4.16.10/src/Membership/Controllers/CheckoutController.php#L223
- https://plugins.trac.wordpress.org/browser/wp-user-avatar/tags/4.16.10/src/Membership/Controllers/CheckoutController.php#L239
- https://plugins.trac.wordpress.org/browser/wp-user-avatar/tags/4.16.10/src/Membership/Models/Subscription/SubscriptionEntity.php#L461
- https://plugins.trac.wordpress.org/browser/wp-user-avatar/tags/4.16.10/src/Admin/SettingsPages/Membership/PlansPage/SettingsPage.php#L107
- https://plugins.trac.wordpress.org/browser/wp-user-avatar/tags/4.16.10/src/Admin/SettingsPages/Membership/views/add-edit-plan.php#L24
- https://plugins.trac.wordpress.org/changeset/3497425/wp-user-avatar#file14
More properfraction vulnerabilities
- TI-2021-13635 ProfilePress 3.0 - 3.1.3 - Unauthenticated Privilege Escalation CVSS 3.1CRITICAL 9.8
- TI-2021-13638 ProfilePress 3.0 - 3.1.3 - Arbitrary File Upload in File Uploader Component CVSS 3.1CRITICAL 9.8
- TI-2021-13637 ProfilePress 3.0 - 3.1.3 - Arbitrary File Upload in Image Uploader Component CVSS 3.1CRITICAL 9.8
- TI-2021-13636 ProfilePress 3.0 - 3.1.3 - Authenticated Privilege Escalation CVSS 3.1CRITICAL 9.8
- TI-2024-12168 ProfilePress < 4.15.20 - Admin+ Stored XSS CVSS 3.1MEDIUM 4.8
- TI-2024-12167 ProfilePress < 4.15.20 - Admin+ Stored XSS CVSS 3.1MEDIUM 4.8
Sources
- CVE-2026-4949 · CVE Program
- CVE-2026-4949 · NVD
- FIRST EPSS
- GHSA-9wp3-36f6-c335 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences