Medium severity · published Mar 31, 2026
CVE-2026-3139
User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor <= 3.15.5 - Insecure Direct Object Reference to Authenticated (Subscriber+) Arbitrary Post Author Reassignment via Avatar Field
4.3
CVSS
0.2%
EPSS
No
On KEV
Description
The User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to, and including, 3.15.5 via the wppb_save_avatar_value() function due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to reassign ownership of arbitrary posts and attachments by changing 'post_author'.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
UP
User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor · cozmoslabs
through 3.15.5 · source: vendor
Affected product
UP
User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor
cozmoslabs
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-3139
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-3139
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset/3481772/profile-builder
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/760f7736-db49-4210-a2f3-3abb506106d7?source=cve
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