CVE-2026-104003 json
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
published 24d ago modified 24d ago also EUVD-2026-102825
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 13%
- public exploits
- 0
- none known
Summary
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.
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 24d ago
Exploit prediction
0.23% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
Affected products
- properfraction Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content – ProfilePress
Classification
- Weakness
-
- CWE-94 Improper Control of Generation of Code
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/83adfbff-f625-4474-81b9-961c496d59a0?source=cve
- plugins.trac.wordpress.org /browser/wp-user-avatar/tags/4.17.5/src/ShortcodeParser/FrontendProfileTag.php#L142
- plugins.trac.wordpress.org /browser/wp-user-avatar/tags/4.17.5/src/ShortcodeParser/Builder/FrontendProfileBuilder.php#L169
- plugins.trac.wordpress.org /browser/wp-user-avatar/tags/4.17.5/src/Themes/DragDrop/UserProfile/DefaultTemplate.php#L379
- plugins.trac.wordpress.org /browser/wp-user-avatar/tags/4.17.5/src/Functions/GlobalFunctions.php#L1768
- pastebin.com /raw/pCgrW6Pf
- plugins.trac.wordpress.org /browser/wp-user-avatar/tags/4.17.6/src/ShortcodeParser/FrontendProfileTag.php
Sources
- CVE List CVE-2026-104003
- NVD CVE-2026-104003
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