4.8

CVE-2023-5228: unknown user registration Cross-site Scripting

CVSS: 4.8v3.1MediumModified
Published 06-11-2023Last modified 26-02-2025
Open JSON

Vulnerability summary

CVE-2023-5228 is a medium (CVSS 4.8) Cross-site Scripting vulnerability in unknown user registration. EPSS estimates a 0.56% chance of exploitation in the next 30 days, higher than 45.6% of scored vulnerabilities. 1 public exploit is recorded. Fixed in 3.0.4.2.

Overall risk
29/100
0100
Medium · default modelHow is this calculated?
CVSS score
4.8/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.56%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 06-11-2023
    PublishedVulnerability first disclosed.
  2. 26-02-2025
    Last modifiedVulnerability information updated.

Description

The User Registration WordPress plugin before 3.0.4.2 does not sanitize and escape some of its settings, which could allow high-privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup).

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.56%

Chance of exploitation in the next 30 days

Percentile

46%

Versus all other CVEs

30-day change

0.00 pp

From 0.56% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.56%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (wpscan.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Unknown1 product
Wordpress1 product
  • user-registration≤ 3.0.4.1 (fixed in 3.0.4.2)
Wpeverest1 product

3 vendors · 3 products

References

2 links