CVE-2023-5089Public exploitNetwork attack vector

Hidden login URL disclosure via unfiltered auth_redirect

Published Oct 16, 2023 · Updated Apr 23, 2025

Protection bypass in WPMU DEV Defender Security before 4.1.0 allows remote attackers to discover a hidden WordPress login URL. The hide-login handler fails to intercept redirects produced by WordPress's auth_redirect function, so a crafted Gravity Forms request reaches the concealed login endpoint. The Hide Login Page feature must be enabled, and the consequence is limited to disclosure of the login location rather than authentication bypass.

CVSS severity5.3
Medium
EPSS probability2.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Protection bypass in WPMU DEV Defender Security before 4.1.0 allows remote attackers to discover a hidden WordPress login URL. The hide-login handler fails to intercept redirects produced by WordPress's auth_redirect function, so a crafted Gravity Forms request reaches the concealed login endpoint. The Hide Login Page feature must be enabled, and the consequence is limited to disclosure of the login location rather than authentication bypass.

The record

CVE
CVE-2023-5089
Published
Oct 16, 2023
Updated
Apr 23, 2025
Vendor
WPMU DEV
Product
Defender Security
Classifications
T1595.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <4.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WPMU DEV · Defender Securityversion=0 <4.1.0

Published CVSS scores

5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1595.002Vulnerability Scanning

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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