CVE-2023-51490Network attack vector

Unauthenticated data exposure via sensitive log entries

Published Jan 8, 2024 · Updated Apr 28, 2026

Sensitive-data exposure in WPMU DEV Defender Security 4.1.0 and earlier allows remote attackers to read data from a log file. The affected logging path writes sensitive information into a log file, but public sources do not identify the path or data fields. Unauthenticated network access is sufficient, and the documented impact is limited to reading logged information.

CVSS severity5.3
Medium
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive-data exposure in WPMU DEV Defender Security 4.1.0 and earlier allows remote attackers to read data from a log file. The affected logging path writes sensitive information into a log file, but public sources do not identify the path or data fields. Unauthenticated network access is sufficient, and the documented impact is limited to reading logged information.

The record

CVE
CVE-2023-51490
Published
Jan 8, 2024
Updated
Apr 28, 2026
Vendor
WPMU DEV
Product
Defender Security
Classifications
CWE-532, CAPEC-215, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 8, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 2026Record 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=n/a <=4.1.0 changes=[{"at":"4.2.0","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WPMU DEV · Defender Securityversion=n/a <=4.1.0 changes=[{"at":"4.2.0","status":"unaffected"}]

Published CVSS scores

5.3PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-532Insertion of Sensitive Information into Log File
CAPEC-215Fuzzing for application mapping
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

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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