CVE-2023-27459: wordpress user-registration Deserialization of Untrusted Data
CVSS: 8.8v3.1HighModified
Published 26-03-2024Last modified 28-04-2026
Vulnerability summary
CVE-2023-27459 is a high (CVSS 8.8) Deserialization of Untrusted Data vulnerability in wordpress user-registration. EPSS estimates a 0.61% chance of exploitation in the next 30 days, higher than 48.3% of scored vulnerabilities. Fixed in 2.3.3.
CVSS score
8.8/10
010
High · v3.1 (NVD)EPSS score
0.61%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 26-03-2024PublishedVulnerability first disclosed.
- 28-04-2026Last modifiedVulnerability information updated.
Description
Deserialization of Untrusted Data vulnerability in WPEverest User Registration.This issue affects User Registration: from n/a through 2.3.2.1.
CVSS metrics
3 scores · 3 sources · 1 versionHigh 8.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSources3 sources · 7.4–8.8
- CVE.orgCNA7.4HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:LDiffers
- wordfenceSource7.5HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HDiffers
EPSS trend
Probability
0.61%
Chance of exploitation in the next 30 days
Percentile
48%
Versus all other CVEs
30-day change
0.00 pp
From 0.61% on 20-09-2026
20-09-202620-10-2026
EPSS score0.61%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Wpeverest2 products
- user_registration≥ n/a, ≤ 2.3.2.1
- user_registration_\&_membership< 2.3.3
Wordpress1 product
- user-registration≤ 2.3.2.1 (fixed in 2.3.3)
2 vendors · 3 products