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Fencer Vulns
critical 9.8

CVE-2023-3460 in the critical feed json

Ultimate Member < 2.6.7 - Unauthenticated Privilege Escalation

published 2023-07-04 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-44122

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
72.3%
EPSS 72.3% chance of exploitation in 30 days, percentile 99.4%
public exploits
1
Exploit-DB, plus a Nuclei check

Summary

The Ultimate Member WordPress plugin before 2.6.7 does not prevent visitors from creating user accounts with arbitrary capabilities, effectively allowing attackers to create administrator accounts at will. This is actively being exploited in the wild.

Patch / fix

  • Unknown Ultimate Member 2.6.7

Timeline

  1. Published
  2. First public exploit (EDB-52393)

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
total
Assessed
23 mo ago

Exploit prediction

72.31% chance of exploitation in the next 30 days, higher than 99.4% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-52393 Ultimate Member WordPress Plugin 2.6.6 - Privilege Escalation webapps, 2025-08-03
  • Nuclei template Ultimate Member < 2.6.7 - Unauthenticated Privilege Escalation nuclei detection template
  • wpscan.com https://wpscan.com/vulnerability/694235c7-4469-4ffd-a722-9225b19e98d7 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Unknown Ultimate Member

Classification

Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.