# CVE-2018-18546: ThinkPHP SQLi Vulnerability

> SQL injection in ThinkPHP allows attackers to manipulate database queries via the order parameter, potentially exposing or modifying data.

- **Severity:** Critical 9.8 (`CVSS:3.0/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:** 21 Oct 2018
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-j7g8-3qqg-8cvm

## What is CVE-2018-18546?

CVE-2018-18546 is a critical SQL injection vulnerability in n/a, published on 21 Oct 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

ThinkPHP 3.2.4 has SQL Injection via the order parameter because the Library/Think/Db/Driver.class.php parseOrder function mishandles the key variable.

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

## Which versions are affected by CVE-2018-18546?

2 open source packages ship an affected version, including topthink/framework. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `topthink/framework` | Packagist | All versions to 3.2.4 | None |
| `topthink/framework` | Packagist | All versions to 3.2.4 | None |

Products: Thinkphp Thinkphp.

## How do I fix CVE-2018-18546?

No fix has been published for CVE-2018-18546 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-18546 being exploited?

There is no known exploitation of CVE-2018-18546 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2025-63888](https://insights.sbomify.com/CVE-2025-63888/): Code injection in n/a (critical 9.8)
- [CVE-2025-50706](https://insights.sbomify.com/CVE-2025-50706/): ThinkPHP Path Traversal Vulnerability (critical 9.8)
- [CVE-2025-50707](https://insights.sbomify.com/CVE-2025-50707/): Code injection in n/a (critical 9.8)
- [CVE-2024-48112](https://insights.sbomify.com/CVE-2024-48112/): ThinkPHP deserialization vulnerability (critical 9.8)
- [CVE-2024-44902](https://insights.sbomify.com/CVE-2024-44902/): ThinkPHP deserialization vulnerability (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-18546 and fix it if it is affected.

What it is: CVE-2018-18546 is a critical SQL injection vulnerability in n/a, published on 21 Oct 2018. 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-2018-18546 in the wild and no public exploit code.

Affected packages and fixed versions:
- topthink/framework (Packagist): affected all versions up to 3.2.4; no fix listed
- topthink/framework (Packagist): affected all versions up to 3.2.4; no fix listed

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-2018-18546/ (Markdown: https://insights.sbomify.com/CVE-2018-18546/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-18546
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-18546
- OSV: https://osv.dev/vulnerability/CVE-2018-18546

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-18546/
Summaries are generated and may contain mistakes; the official description above is the record.