# CVE-2026-107120: Contest Gallery < 33.0.1 - Unauthenticated Email Verification Bypass via Brute-Forceable Registration PIN

> Unauthenticated attackers can brute-force registration PINs to create accounts and gain authenticated sessions in Contest Gallery WordPress plugin.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Oct 2026
- **Updated:** 10 Oct 2026
- **Also known as:** GHSA-4prj-22r4-mcwx

## What is CVE-2026-107120?

CVE-2026-107120 is a medium-severity authentication bypass vulnerability in Unknown Contest Gallery, published on 10 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Contest Gallery  WordPress plugin before 33.0.1 does not limit the number of attempts against its front-end registration email-verification step, which relies on a short numeric PIN, allowing unauthenticated attackers to brute-force the PIN and create and activate a WordPress account bound to an email address they do not own, gaining an authenticated session.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2026-107120?


## How do I fix CVE-2026-107120?

No fix has been published for CVE-2026-107120 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-107120 being exploited?

There is no known exploitation of CVE-2026-107120 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-107120 and fix it if it is affected.

What it is: CVE-2026-107120 is a medium-severity authentication bypass vulnerability in Unknown Contest Gallery, published on 10 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-107120 in the wild and no public exploit code.

Affected product: Unknown Contest Gallery. 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-2026-107120/ (Markdown: https://insights.sbomify.com/CVE-2026-107120/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-107120
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-107120
- OSV: https://osv.dev/vulnerability/CVE-2026-107120

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-107120/
Summaries are generated and may contain mistakes; the official description above is the record.