# CVE-2021-24321: Bello < 1.6.0 - Unauthenticated Blind SQL Injection

> Unauthenticated attackers can perform blind SQL injection via unsanitized parameters in the Bello WordPress theme, potentially accessing or modifying database contents.

- **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:** 1 Jun 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-5mwv-pv28-2ghw

## What is CVE-2021-24321?

CVE-2021-24321 is a critical SQL injection vulnerability in BoldThemes Bello - Directory & Listing, published on 1 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Bello - Directory & Listing WordPress theme before 1.6.0 did not sanitise the bt_bb_listing_field_price_range_to, bt_bb_listing_field_now_open, bt_bb_listing_field_my_lng, listing_list_view and bt_bb_listing_field_my_lat parameters before using them in a SQL statement, leading to SQL Injection issues

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

## Which versions are affected by CVE-2021-24321?

It affects 1 product.


Products: Bold-Themes Bello.

## How do I fix CVE-2021-24321?

No fix has been published for CVE-2021-24321 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-24321 being exploited?

There is no known exploitation of CVE-2021-24321 in the wild and no public exploit code.

## Other vulnerabilities in BoldThemes Bello - Directory & Listing

- [CVE-2021-24320](https://insights.sbomify.com/CVE-2021-24320/): Bello < 1.6.0 - Unauthenticated Reflected XSS & XFS (medium 6.1)
- [CVE-2021-24319](https://insights.sbomify.com/CVE-2021-24319/): Bello < 1.6.0 - Authenticated Cross-Site Scripting (XSS) and XFS (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-24321 and fix it if it is affected.

What it is: CVE-2021-24321 is a critical SQL injection vulnerability in BoldThemes Bello - Directory & Listing, published on 1 Jun 2021. 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-2021-24321 in the wild and no public exploit code.

Affected product: BoldThemes Bello - Directory & Listing. 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-2021-24321/ (Markdown: https://insights.sbomify.com/CVE-2021-24321/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-24321
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-24321
- OSV: https://osv.dev/vulnerability/CVE-2021-24321

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-24321/
Summaries are generated and may contain mistakes; the official description above is the record.