# CVE-2017-17736: Missing authorization in n/a

> Remote attackers can gain Global Administrator access by accessing the installation page, requiring immediate upgrade to secure the CMS.

- **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:** 23 Mar 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-9fp8-293c-q6xm

## What is CVE-2017-17736?

CVE-2017-17736 is a critical missing authorization vulnerability in Kentico Xperience, published on 23 Mar 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Kentico 9.0 before 9.0.51 and 10.0 before 10.0.48 allows remote attackers to obtain Global Administrator access by visiting CMSInstall/install.aspx and then navigating to the CMS Administration Dashboard.

Weakness: CWE-425 (Direct Request)

## Which versions are affected by CVE-2017-17736?

It affects 1 product.


Products: Kentico Xperience.

## How do I fix CVE-2017-17736?

No fix has been published for CVE-2017-17736 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-17736 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-17736 exists.

Public exploit code:

- https://github.com/0xSojalSec/Nuclei-TemplatesNuclei-Templates-CVE-2017-17736 (github_poc): https://github.com/0xSojalSec/Nuclei-TemplatesNuclei-Templates-CVE-2017-17736
- Kentico - Installer Privilege Escalation (nuclei): http/cves/2017/CVE-2017-17736.yaml

## Other vulnerabilities in Kentico Xperience

- [CVE-2025-2746](https://insights.sbomify.com/CVE-2025-2746/): Kentico Xperience CMS Authentication Bypass Using an Alternate Path or Channel (critical 9.8, exploited in the wild)
- [CVE-2025-2747](https://insights.sbomify.com/CVE-2025-2747/): Kentico Xperience CMS Authentication Bypass Using an Alternate Path or Channel (critical 9.8, exploited in the wild)
- [CVE-2019-10068](https://insights.sbomify.com/CVE-2019-10068/): Kentico Xperience Deserialization of Untrusted Data (critical 9.8, exploited in the wild)
- [CVE-2025-2749](https://insights.sbomify.com/CVE-2025-2749/): Kentico Xperience Path Traversal (high 7.2, exploited in the wild)
- [CVE-2019-12102](https://insights.sbomify.com/CVE-2019-12102/): Missing authorization in n/a (critical 9.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-17736 and fix it if it is affected.

What it is: CVE-2017-17736 is a critical missing authorization vulnerability in Kentico Xperience, published on 23 Mar 2018. 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-2017-17736 exists.

Affected product: Kentico Xperience. 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-2017-17736/ (Markdown: https://insights.sbomify.com/CVE-2017-17736/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-17736
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-17736
- OSV: https://osv.dev/vulnerability/CVE-2017-17736

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-17736/
Summaries are generated and may contain mistakes; the official description above is the record.