What is CVE-2026-1657?

CVE-2026-1657 is a medium-severity vulnerability in Metagauss Eventprime – Events Calendar, Bookings And Tickets, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-02-17.

How severe is CVE-2026-1657?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2026-1657 known to be exploited?

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

Auth bypass in Metagauss Eventprime – Events Calendar, Bookings And Tickets

CVE-2026-1657

The EventPrime plugin for WordPress is vulnerable to unauthorized image file upload in all versions up to, and including, 4.2.8.4. This is due to the plugin registering the upload_file_media AJAX action as publicly accessible (nopriv-enabl…

Vulnerability class: Broken Access Control

EPSS: 0.004 (29.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Metagauss Eventprime – Events Calendar, Bookings And Tickets — versions 0

Weakness classification (CWE)

CWE-862 — Missing Authorization

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2026-1657?: CVE-2026-1657 is a medium-severity vulnerability in Metagauss Eventprime – Events Calendar, Bookings And Tickets, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-02-17.
How severe is CVE-2026-1657?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2026-1657 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.