CVE-2025-39400: wordpress user-registration Cross-site Scripting
CVSS: 7.1v3.1HighModified
Published 24-04-2025Last modified 28-04-2026
Vulnerability summary
CVE-2025-39400 is a high (CVSS 7.1) Cross-site Scripting vulnerability in wordpress user-registration. EPSS estimates a 0.29% chance of exploitation in the next 30 days, higher than 20.2% of scored vulnerabilities. Fixed in 4.2.0.
CVSS score
7.1/10
010
High · v3.1 (CVE.org)EPSS score
0.29%
0%100%
Low · +0.01 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 24-04-2025PublishedVulnerability first disclosed.
- 28-04-2026Last modifiedVulnerability information updated.
Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in wpeverest User Registration user-registration allows Reflected XSS.This issue affects User Registration: from n/a through < 4.2.0.
CVSS metrics
3 scores · 3 sources · 1 versionHigh 7.1Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:LSources3 sources · 6.1–7.1
- NVDNIST6.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NDiffers
- wordfenceSource6.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NDiffers
EPSS trend
Probability
0.29%
Chance of exploitation in the next 30 days
Percentile
20%
Versus all other CVEs
30-day change
+0.01 pp
From 0.28% on 19-09-2026
19-09-202619-10-2026
EPSS score0.29%
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≤ 4.2.0
- user_registration_\&_membership< 4.2.0 | < 5.2.0
Wordpress1 product
- user-registration≤ 4.1.5 (fixed in 4.2.0)
2 vendors · 3 products