# CVE-2018-17826: Cross-site request forgery in n/a

> Cross-site request forgery allows attackers to create admin accounts and upload PHP files, leading to remote code execution.

- **Severity:** High 8.8 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/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:** A user has to click or open something
- **Fix available:** No
- **Published:** 1 Oct 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-h5cc-vhvc-c29x

## What is CVE-2018-17826?

CVE-2018-17826 is a high-severity vulnerability in n/a, published on 1 Oct 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

HisiPHP 1.0.8 allows CSRF via admin.php/admin/user/adduser.html to add an administrator account. The attacker can then use that account to execute arbitrary PHP code by leveraging app/common/model/AdminAnnex.php to add .php to the default list of allowable file-upload types (.jpg, .png, .gif, .jpeg, and .ico).

Weakness: CWE-352 (Cross-Site Request Forgery)

## Which versions are affected by CVE-2018-17826?

It affects 1 product.


Products: Hisiphp Hisiphp.

## How do I fix CVE-2018-17826?

No fix has been published for CVE-2018-17826 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-17826 being exploited?

There is no known exploitation of CVE-2018-17826 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2024-33445](https://insights.sbomify.com/CVE-2024-33445/): Code injection in n/a (critical 9.8)
- [CVE-2020-28062](https://insights.sbomify.com/CVE-2020-28062/): File upload in n/a (high 7.2)
- [CVE-2018-17827](https://insights.sbomify.com/CVE-2018-17827/): Code injection in n/a (high 7.2)
- [CVE-2020-21130](https://insights.sbomify.com/CVE-2020-21130/): Cross-site scripting in n/a (medium 6.1)
- [CVE-2019-1010193](https://insights.sbomify.com/CVE-2019-1010193/): Cross-site scripting in hisiphp (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-17826 and fix it if it is affected.

What it is: CVE-2018-17826 is a high-severity vulnerability in n/a, published on 1 Oct 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2018-17826 in the wild and no public exploit code.

Affected product: n/a. 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-2018-17826/ (Markdown: https://insights.sbomify.com/CVE-2018-17826/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-17826
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-17826
- OSV: https://osv.dev/vulnerability/CVE-2018-17826

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-17826/
Summaries are generated and may contain mistakes; the official description above is the record.