User Registration <= 4.4.9 — Authenticated (Subscriber+) Arbitrary Shortcode Execution
CVE-2026-24353Published · Updated Action summary
Affected: ≤4.4.9Update to 5.0 or newer
All remediation steps- Severity
- Medium5.4
- CVSS
- 5.4CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
UI:NUser interaction- None
S:UScope- Unchanged
C:LConfidentiality- Low
I:LIntegrity- Low
A:NAvailability- None
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder user-registration
- Affected≤ 4.4.9
- Patched in5.0
Update to 5.0 or newer.
You are affected if you run ≤ 4.4.9. Version 5.0 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 5.0, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to hashiramasenju333.
The The User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 4.4.9. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for authenticated attackers, with Subscriber-level access and above, to execute arbitrary shortcodes.
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 User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder
All 73| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.3 | Missing Authorization ≤5.3.1Update to 5.3.2 | CVE-2026-124258 | |
| Medium4.3 | Missing Authorization ≤5.3.0Update to 5.3.1 | CVE-2026-120840 | |
| Medium5.3 | Missing Authorization ≤5.3.1Update to 5.3.2 | CVE-2026-119522 | |
| Medium6.4 | Authenticated (Subscriber+) Stored Cross-Site Scripting ≤5.3.0Update to 5.3.1 | CVE-2026-27061 | |
| Medium5.3 | Missing Authorization ≤5.3.0Update to 5.3.1 | CVE-2026-25450 |
- Medium5.3Missing Authorization
≤5.3.1Update to 5.3.2
- Medium4.3Missing Authorization
≤5.3.0Update to 5.3.1
- Medium5.3Missing Authorization
≤5.3.1Update to 5.3.2
- Medium6.4Authenticated (Subscriber+) Stored Cross-Site Scripting
≤5.3.0Update to 5.3.1
- Medium5.3Missing Authorization
≤5.3.0Update to 5.3.1
Timeline
CVE published
Severity medium, CVSS 5.4
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.