# CVE-2021-4380: Pinterest Automatic <= 4.14.3 - Unuathenticated Arbitrary Options Update

> Unauthenticated attackers can update arbitrary site options to create admin accounts or redirect visitors due to missing capability checks.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 Jun 2023
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-mmhw-42fh-v6gr

## What is CVE-2021-4380?

CVE-2021-4380 is a critical missing authorization vulnerability in ValvePress Pinterest Automatic, published on 7 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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.

Weakness: CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2021-4380?

It affects 1 product.


Products: Valvepress Pinterest Automatic Pin.

## How do I fix CVE-2021-4380?

No fix has been published for CVE-2021-4380 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-4380 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-4380 exists.

Public exploit code:

- Pinterest Automatic < 4.14.4 - Unauthenticated Arbitrary Options Update (nuclei): http/cves/2021/CVE-2021-4380.yaml

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-4380 and fix it if it is affected.

What it is: CVE-2021-4380 is a critical missing authorization vulnerability in ValvePress Pinterest Automatic, published on 7 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-4380 exists.

Affected product: ValvePress Pinterest Automatic. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2021-4380/ (Markdown: https://insights.sbomify.com/CVE-2021-4380/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-4380
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-4380
- OSV: https://osv.dev/vulnerability/CVE-2021-4380

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-4380/
Summaries are generated and may contain mistakes; the official description above is the record.