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Fencer Vulns
medium 5.3

CVE-2023-5089 json

Defender Security < 4.1.0 - Protection Bypass (Hidden Login Page)

published 2023-10-16 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-57429

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.5%
EPSS 2.5% chance of exploitation in 30 days, percentile 84%
public exploits
0
none known, plus a Nuclei check

Summary

The Defender Security WordPress plugin before 4.1.0 does not prevent redirects to the login page via the auth_redirect WordPress function, allowing an unauthenticated visitor to access the login page, even when the hide login page functionality of the plugin is enabled.

Patch / fix

  • Unknown Defender Security 4.1.0

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

2.47% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Nuclei template Defender Security < 4.1.0 - Protection Bypass (Hidden Login Page) nuclei detection template
  • wpscan.com https://wpscan.com/vulnerability/2b547488-187b-44bc-a57d-f876a7d4c87d referenced PoC, tagged "exploit" by a source, unverified
  • sprocketsecurity.com https://www.sprocketsecurity.com/resources/discovering-wp-admin-urls-in-wordpress-with-gravityforms referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected products

  • Unknown Defender Security

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.