CVE-2024-8519

MEDIUM

Ultimate Member < 2.8.7 - Authenticated Stored Cross-Site Scripting via um_loggedin Shortcode

Title source: llm

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 plugin's 'um_loggedin' shortcode in all versions up to, and including, 2.8.6 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

References (5)

Core 5

Core References

Product

https://wordpress.org/plugins/ultimate-member/

Product

https://github.com/ultimatemember/ultimatemember/blob/7b8a7a7c039bde4539c07e049b19036192f1c133/includes/core/class-shortcodes.php#L433

View Writeup ZIP pw:eip

Patch

https://github.com/ultimatemember/ultimatemember/pull/1545

Patch

https://plugins.trac.wordpress.org/changeset/3160947/ultimate-member/tags/2.8.7/includes/core/class-shortcodes.php

Third Party Advisory

https://www.wordfence.com/threat-intel/vulnerabilities/id/9e394bb2-d505-4bf1-b672-fea3504bf936?source=cve

Scores

CVSS v3 6.4

EPSS 0.0041

EPSS Percentile 33.3%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-79

Status published

Products (2)

ultimatemember/Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin < 2.8.6

ultimatemember/ultimate_member < 2.8.7

Published Oct 04, 2024

Tracked Since Feb 18, 2026