CVE•Published 2024-03-13•Modified 2026-04-08•1 article on news•6 live references•NVD data

CVE-2024-2123Ultimatemember · Ultimate_member

Vulnerability data via NVD (ingested)

CVSS v3.1

7.2

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

EPSS percentile

Exploit Prediction Scoring System · top 3% of all CVEs

Weaknesses (CWE)

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Description

The Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the several parameters in all versions up to, and including, 2.8.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Timeline

Published 2024-03-13

Modified 2026-04-08

External references

NVD MITRE Exploit-DB GitHub PoC trickest/cve VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2024-2123

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · WP plugin path

http.html:"/wp-content/plugins/ultimate-member/"

Matches any site loading the "ultimate-member" plugin — doesn't rely on Shodan's vuln tag.

Shodan · product

product:"Ultimatemember Ultimate Member"

All exposed Ultimatemember Ultimate Member instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Ultimate Member"

HTTP body or banner mentions "Ultimate Member" — catches deploys Shodan didn't identify as a product.