# CVE-2021-39351: WP Bannerize 2.0.0 - 4.0.2 - Authenticated SQL Injection

> Authenticated attackers can exploit SQL injection in WP Bannerize to exfiltrate sensitive data from WordPress sites.

- **Severity:** High 7.7 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 Oct 2021
- **Updated:** 14 Feb 2025
- **Also known as:** GHSA-p27r-23gv-6hr2

## What is CVE-2021-39351?

CVE-2021-39351 is a high-severity SQL injection vulnerability in WP Bannerize, published on 6 Oct 2021. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The WP Bannerize WordPress plugin is vulnerable to authenticated SQL injection via the id parameter found in the ~/Classes/wpBannerizeAdmin.php file which allows attackers to exfiltrate sensitive information from vulnerable sites. This issue affects versions 2.0.0 - 4.0.2.

Weakness: CWE-89 (Improper Neutralization of Special Elements used in an SQL Command)

## Which versions are affected by CVE-2021-39351?

It affects 1 product.


Products: Wp Bannerize Project Wp Bannerize.

## How do I fix CVE-2021-39351?

No fix has been published for CVE-2021-39351 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-39351 being exploited?

There is no known exploitation of CVE-2021-39351 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-39351 and fix it if it is affected.

What it is: CVE-2021-39351 is a high-severity SQL injection vulnerability in WP Bannerize, published on 6 Oct 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-39351 in the wild and no public exploit code.

Affected product: WP Bannerize. 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-2021-39351/ (Markdown: https://insights.sbomify.com/CVE-2021-39351/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-39351
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-39351
- OSV: https://osv.dev/vulnerability/CVE-2021-39351

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-39351/
Summaries are generated and may contain mistakes; the official description above is the record.