Auth bypass in Valvepress WordPress Automatic Plugin

CVE-2021-4374

The WordPress Automatic Plugin for WordPress is vulnerable to arbitrary options updates in versions up to, and including, 3.53.2. This is due to missing authorization and option validation in the process_form.php file. This makes it possible for unauthenticated attackers to arbitrarily update the settings of a vulnerable site and ultimately compromise the entire site.

Vulnerability class: Broken Access Control

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.

EPSS exploit prediction

EPSS: 0.164 (96.9th percentile), scored .

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 96.9% 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-2021-4374: held from 0.164 to 0.164.

EPSS over last 30 days · oldest: 0.164 · newest: 0.164 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2021-4374?
CVE-2021-4374 is a critical-severity vulnerability in Valvepress WordPress Automatic Plugin, classified under Missing Authorization. CVSS score: 9.1/10. Published 2023-06-07.
How severe is CVE-2021-4374?
Critical severity. CVSS v3 base score is 9.1 out of 10.
Is CVE-2021-4374 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.