Auth bypass in Eventprime

CVE-2026-39518

Subscriber Insecure Direct Object References (IDOR) in EventPrime <= 4.3.0.0 versions.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (19.4th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-39518: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-39518?
CVE-2026-39518 is a high-severity vulnerability in Eventprime, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.1/10. Published 2026-06-15.
How severe is CVE-2026-39518?
High severity. CVSS v3 base score is 7.1 out of 10.