What is CVE-2024-8519?

CVE-2024-8519 is a medium-severity vulnerability in Ultimatemember Ultimate Member, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2024-10-04.

How severe is CVE-2024-8519?

Medium severity. CVSS v3 base score is 6.4 out of 10.

Is CVE-2024-8519 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Ultimatemember Ultimate Member

CVE-2024-8519

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.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2024-10-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (35.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000

Affected products

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

www.wordfence.com/threat-intel/vulnerabilities/id/9e394bb2-d505-4bf1-b672-fea35… (Third Party Advisory)
github.com/ultimatemember/ultimatemember/blob/7b8a7a7c039bde4539c07e049b1903619… (Product)
wordpress.org/plugins/ultimate-member/ (Product)
github.com/ultimatemember/ultimatemember/pull/1545 (Patch)
plugins.trac.wordpress.org/changeset/3160947/ultimate-member/tags/2.8.7/include… (Patch)

Frequently asked questions

What is CVE-2024-8519?: CVE-2024-8519 is a medium-severity vulnerability in Ultimatemember Ultimate Member, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2024-10-04.
How severe is CVE-2024-8519?: Medium severity. CVSS v3 base score is 6.4 out of 10.
Is CVE-2024-8519 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.