CVE-2021-4374 (GCVE-0-2021-4374)

Vulnerability from cvelistv5 – Published: 2023-06-07 01:51 – Updated: 2026-04-08 17:24
VLAI Previdian
Title
WordPress Automatic Plugin <= 3.53.2 - Unauthenticated Arbitrary Options Update
Summary
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.
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-12-28 00:40 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version
ValvePress WordPress Automatic Plugin Affected: 0 , < 3.53.3 (semver)
Create a notification for this product.
Credits
Jerome Bruandet
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 1145c7a4-c7dd-41d7-b8ee-8a3adaf7126a

Vulnerability ID: CVE-2021-4374

Status: Confirmed

Status Updated: 2026-04-25 02:00 CEST

Exploited: Yes

Timestamps
First Seen: 2026-04-25
Asserted: 2026-04-25
Scope
Notes: 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... | Affected: ValvePress / WordPress Automatic Plugin | CVSS: 9.1 (CRITICAL) | EPSS: 0.16408 | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian

Details
Feed Previdian (previdian.com)
Title 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...
Cve Id CVE-2021-4374
Vendor ValvePress
Ghsa Id None
Product WordPress Automatic Plugin
Added Date 2026-04-25T00:00:00.000Z
Cvss Score 9.1
Epss Score 0.16408
Previous Ids
Cvss Severity CRITICAL
Virtual Patch False
Cvss Estimated False
Epss Percentile 0.96888
Used In Malware unknown
Vulnerability Id CVE-2021-4374
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-10-02 09:09 CEST | Updated: 2026-10-02 09:09 CEST
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.