9.8

CVE-2026-4882: wordpress user-registration-advanced-fields

CVSS: 9.8v3.1CriticalDeferred
Published 02-05-2026Last modified 04-05-2026
Open JSON

Vulnerability summary

CVE-2026-4882 is a critical (CVSS 9.8) vulnerability in wordpress user-registration-advanced-fields. EPSS estimates a 0.87% chance of exploitation in the next 30 days, higher than 58.3% of scored vulnerabilities. Fixed in 1.6.21.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.87%
0%100%
Low · +0.22 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 02-05-2026
    PublishedVulnerability first disclosed.
  2. 04-05-2026
    Last modifiedVulnerability information updated.

Description

The User Registration Advanced Fields plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'URAF_AJAX::method_upload' function in all versions up to, and including, 1.6.20. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible. Note: The vulnerability can only be exploited if a "Profile Picture" field is added to the form.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.87%

Chance of exploitation in the next 30 days

Percentile

58%

Versus all other CVEs

30-day change

+0.22 pp

From 0.65% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.87%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Wordpress1 product
  • user-registration-advanced-fields≤ 1.6.20 (fixed in 1.6.21)
Wpeverest1 product

2 vendors · 2 products

References

3 links