Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content <= 4.17.5 — Authenticated (Subscriber+) Arbitrary Shortcode Execution via Comment Content Rendered on ProfilePress User Profile 'Comments' Tab
CVE-2026-104003Published · Updated Action summary
Affected: ≤4.17.5Update to 4.17.6 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?
ProfilePress – Paid Membership, Online Courses (LMS), Ecommerce, User Registration & Login Form, User Profile & Restrict Content wp-user-avatar
- Affected≤ 4.17.5
- Patched in4.17.6
Update to 4.17.6 or newer.
You are affected if you run ≤ 4.17.5. Version 4.17.6 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under ProfilePress – Paid Membership, Online Courses (LMS), Ecommerce, User Registration & Login Form, User Profile & Restrict Content.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 4.17.6, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch ProfilePress – Paid Membership, Online Courses (LMS), Ecommerce, User Registration & Login Form, User Profile & Restrict Content to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Kuba.
The WP User Avatar / ProfilePress plugin for WordPress is vulnerable to Arbitrary Shortcode Execution in versions up to, and including, 4.17.5. This is due to the get_user_profile_structure() function assembling the front-end profile buffer — which includes raw comment excerpts inlined by author_comment_query() — and passing the entire buffer to do_shortcode() after only a narrow neutralization pass (ppress_neutralize_buffer_shortcodes) that blocks pp-custom-html and bracket fragments containing HTML delimiters but leaves any other well-formed shortcode intact. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary shortcodes (from any active plugin or theme) with attacker-chosen attributes by posting a comment whose body contains the shortcode markup; the shortcode is then executed server-side when any visitor loads the target's front-end profile Comments tab, letting the attacker reach capability-gated or data-returning shortcodes and inject raw HTML markup into a publicly viewable page.
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 ProfilePress – Paid Membership, Online Courses (LMS), Ecommerce, User Registration & Login Form, User Profile & Restrict Content
All 60| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.3 | Missing Authorization <4.17.6Update to 4.17.6 | CVE-2026-123656 | |
| Medium5.3 | Missing Authorization <4.17.6Update to 4.17.6 | CVE-2026-123657 | |
| Medium4.3 | 4.17.3 - Missing Authorization 4.16.13 – 4.17.3Update to 4.17.4 | CVE-2026-123661 | |
| High7.3 | Unauthenticated Arbitrary Shortcode Execution ≤4.17.7Update to 4.18.0 | CVE-2026-39733 | |
| Medium5.4 | Authenticated (Subscriber+) Arbitrary Shortcode Execution ≤4.17.7Update to 4.18.0 | CVE-2026-119473 |
- Medium5.3Missing Authorization
<4.17.6Update to 4.17.6
- Medium5.3Missing Authorization
<4.17.6Update to 4.17.6
- Medium4.34.17.3 - Missing Authorization
4.16.13 – 4.17.3Update to 4.17.4
- High7.3Unauthenticated Arbitrary Shortcode Execution
≤4.17.7Update to 4.18.0
- Medium5.4Authenticated (Subscriber+) Arbitrary Shortcode Execution
≤4.17.7Update to 4.18.0
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.