# CVE-2023-43739: Online Book Store Project v1.0 - Unauthenticated SQL Injection (SQLi)

> Unauthenticated attackers can inject SQL via the bookisbn parameter in cart.php to read or modify 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:** 28 Sep 2023
- **Updated:** 23 Sep 2024
- **Also known as:** GHSA-44fv-mcq3-v66f

## What is CVE-2023-43739?

CVE-2023-43739 is a critical SQL injection vulnerability in Online Book Store Project, published on 28 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The 'bookisbn' parameter of the cart.php resource

does not validate the characters received and they

are sent unfiltered to the database.

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

## Which versions are affected by CVE-2023-43739?

It affects 1 product.


Products: Online Book Store Project Project Online Book Store Project.

## How do I fix CVE-2023-43739?

No fix has been published for CVE-2023-43739 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-43739 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-43739 exists.

## Other vulnerabilities in Online Book Store Project

- [CVE-2023-27250](https://insights.sbomify.com/CVE-2023-27250/): SQL injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-43739 and fix it if it is affected.

What it is: CVE-2023-43739 is a critical SQL injection vulnerability in Online Book Store Project, published on 28 Sep 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-2023-43739 exists.

Affected product: Online Book Store Project. 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-2023-43739/ (Markdown: https://insights.sbomify.com/CVE-2023-43739/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-43739
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-43739
- OSV: https://osv.dev/vulnerability/CVE-2023-43739

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-43739/
Summaries are generated and may contain mistakes; the official description above is the record.