CVE-2023-47189: wordpress defender-security Improper Authentication
CVSS: 9.8v3.1CriticalAnalyzed
Published 04-06-2024Last modified 28-04-2026
Vulnerability summary
CVE-2023-47189 is a critical (CVSS 9.8) Improper Authentication vulnerability in wordpress defender-security. EPSS estimates a 0.45% chance of exploitation in the next 30 days, higher than 37.8% of scored vulnerabilities. Fixed in 4.2.1.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
0.45%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 04-06-2024PublishedVulnerability first disclosed.
- 28-04-2026Last modifiedVulnerability information updated.
Description
Improper Authentication vulnerability in WPMU DEV Defender Security allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects Defender Security: from n/a through 4.2.0.
CVSS metrics
3 scores · 3 sources · 1 versionCritical 9.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSources3 sources · 5.3–9.8
- CVE.orgCNA5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NDiffers
- wordfenceSource5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NDiffers
EPSS trend
Probability
0.45%
Chance of exploitation in the next 30 days
Percentile
38%
Versus all other CVEs
30-day change
0.00 pp
From 0.45% on 19-09-2026
19-09-202619-10-2026
EPSS score0.45%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-287Improper AuthenticationWhen an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
- CWE-693Protection Mechanism FailureThe product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.
Affected systems
Wordpress1 product
- defender-security≤ 4.2.0 (fixed in 4.2.1)
Wpmu dev1 product
- defender security≥ n/a, ≤ 4.2.0
Wpmudev1 product
- defender< 4.2.1
3 vendors · 3 products