# CVE-2023-32312: Client secret not mandatory in UmbracoIdentityExtensions

> Attackers can access protected endpoints without authentication because client secrets are not enforced in the UmbracoIdentityExtensions package.

- **Severity:** Low 3.7 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Jun 2023
- **Updated:** 6 Jan 2025
- **Also known as:** GHSA-f2rf-8mwf-6jfh

## What is CVE-2023-32312?

CVE-2023-32312 is a low-severity authentication bypass vulnerability in UmbracoIdentityExtensions, published on 9 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

UmbracoIdentityExtensions is an Umbraco add-on package that enables easy extensibility points for ASP.Net Identity integration. In affected versions client secrets are not required which may expose some endpoints to untrusted actors. Since Umbraco is not a single-page application, the implicit flow is not safe. For traditional MVC applications, it is recommended to use the authorization code flow, which requires the client to authenticate with the authorization server using a client secret. This flow provides better security, as it involves exchanging an authorization code for an access token and/or ID token, rather than directly returning tokens in the URL fragment. This issue has been patched in commit `e792429f9` and a release to Nuget is pending. Users are advised to upgrade when possible.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2023-32312?

It affects 1 product.


Products: Umbraco Umbraco Identity Extensibility.

## How do I fix CVE-2023-32312?

No fix has been published for CVE-2023-32312 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-32312 being exploited?

There is no known exploitation of CVE-2023-32312 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-32312 and fix it if it is affected.

What it is: CVE-2023-32312 is a low-severity authentication bypass vulnerability in UmbracoIdentityExtensions, published on 9 Jun 2023. 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-2023-32312 in the wild and no public exploit code.

Affected product: UmbracoIdentityExtensions. 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-2023-32312/ (Markdown: https://insights.sbomify.com/CVE-2023-32312/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-32312
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-32312
- OSV: https://osv.dev/vulnerability/CVE-2023-32312

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-32312/
Summaries are generated and may contain mistakes; the official description above is the record.