What is CVE-2023-3403?

CVE-2023-3403 is a medium-severity vulnerability in Metagauss Profilegrid, classified under Missing Authorization. CVSS score: 5.4/10. Published 2023-07-18.

How severe is CVE-2023-3403?

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

Is CVE-2023-3403 known to be exploited?

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

Auth bypass in Metagauss Profilegrid

CVE-2023-3403

The ProfileGrid plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'pm_upload_csv' function in versions up to, and including, 5.5.1. This makes it possible for authenticated attackers, with subscriber-level permissions or above to import new users and update existing users.

Vulnerability class: Broken Access Control

Published 2023-07-18 · last modified 2026-06-17.

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

EPSS: 0.006 (45.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Metagauss Profilegrid
Metagauss Profilegrid – User Profiles, Groups And Communities — versions 0

Weakness classification (CWE)

CWE-862 — Missing Authorization

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2023-3403?: CVE-2023-3403 is a medium-severity vulnerability in Metagauss Profilegrid, classified under Missing Authorization. CVSS score: 5.4/10. Published 2023-07-18.
How severe is CVE-2023-3403?: Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2023-3403 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.