What is CVE-2026-42691?

CVE-2026-42691 is a medium-severity vulnerability in Eventprime, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.4/10. Published 2026-10-29.

How severe is CVE-2026-42691?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Auth bypass in Eventprime

CVE-2026-42691

Authorization Bypass Through User-Controlled Key vulnerability in EventPrime EventPrime eventprime-event-calendar-management allows Privilege Abuse.This issue affects EventPrime: from n/a through 4.3.6.0.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published 2026-10-29 · last modified 2026-10-29.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Eventprime

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

patchstack.com/database/wordpress/plugin/eventprime-event-calendar-management/v… (vdb-entry)

Frequently asked questions

What is CVE-2026-42691?: CVE-2026-42691 is a medium-severity vulnerability in Eventprime, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.4/10. Published 2026-10-29.
How severe is CVE-2026-42691?: Medium severity. CVSS v3 base score is 5.4 out of 10.