CVE-2021-4380

CRITICAL EXPLOITED NUCLEI

Pinterest Automatic <1.14.3 - Auth Bypass

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2021-4380 has been observed exploited in the wild (reported by VulnCheck KEV). EIP tracks 1 public exploit from researchers including halilkirazkaya. A Nuclei detection template is also available.

AI-analyzed exploit summary This repository contains functional exploit code for multiple CVEs, including CVE-2021-4380, which involves an authorization bypass in the Pinterest Automatic WordPress plugin. The PoCs demonstrate how unauthenticated attackers can update arbitrary options, potentially leading to administrative account creation or redirection attacks.

Description

The Pinterest Automatic plugin for WordPress is vulnerable to authorization bypass due to missing capability checks on the 'wp_pinterest_automatic_parse_request' function and the 'process_form.php' script in versions up to, and including, 1.14.3. This makes it possible for unauthenticated attackers to update arbitrary options on a site that can be used to create new administrative user accounts or redirect unsuspecting site visitors.

Exploits (1)

github WORKING POC 4 stars
by halilkirazkaya · poc
https://github.com/halilkirazkaya/cve-poc-garage/tree/main/2021/CVE-2021-4380.md

This repository contains functional exploit code for multiple CVEs, including CVE-2021-4380, which involves an authorization bypass in the Pinterest Automatic WordPress plugin. The PoCs demonstrate how unauthenticated attackers can update arbitrary options, potentially leading to administrative account creation or redirection attacks.

Classification
Working Poc 95%
Attack Type
Auth Bypass
Complexity
Trivial
Reliability
Reliable
Target: Pinterest Automatic WordPress plugin (versions up to and including 1.14.3)
No auth needed
Prerequisites: Access to the target WordPress site
devstral-2 · analyzed Feb 27, 2026 Full analysis →

Nuclei Templates (1)

Pinterest Automatic < 4.14.4 - Unauthenticated Arbitrary Options Update
CRITICALVERIFIEDby s4e-io

Scores

CVSS v3 9.8
EPSS 0.0453
EPSS Percentile 90.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact total

Details

VulnCheck KEV 2021-09-06
CWE
CWE-284
Status published
Products (2)
ValvePress/Pinterest Automatic < 4.14.3
valvepress/pinterest_automatic_pin < 4.14.4
Published Jun 07, 2023
Tracked Since Feb 18, 2026