High severity · published Sep 13, 2026
CVE-2026-80071
User Registration & Membership < 5.2.8 - Author+ Privilege Escalation to Administrator
7.2
CVSS
0.5%
EPSS
No
On KEV
Description
The User Registration & Membership WordPress plugin before 5.2.8 does not properly restrict who may author a membership plan or validate the plan a user attaches to their own account, allowing authenticated users with Author-level access and above to assign themselves an arbitrary role and escalate their privileges to Administrator.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
UR
User Registration & Membership ·
before 5.2.8 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80071
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-80071
wpscan.com
https://wpscan.com/vulnerability/a4fbdeea-0d3b-466b-b4b6-4c4db277cd1d/
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