# CVE-2024-12056: Client Secret not checked with OAuth Password grant type

> Attackers with valid credentials can connect using unauthorized client applications due to missing client secret validation in OAuth password grant.

- **Severity:** Low 2.3 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/AU:N/R:U/RE:M/U:Green`)
- **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:** 4 Dec 2024
- **Updated:** 4 Dec 2024
- **Also known as:** GHSA-mc9v-rq2q-h4r4

## What is CVE-2024-12056?

CVE-2024-12056 is a low-severity authentication bypass vulnerability in arcinfo PcVue, published on 4 Dec 2024. 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

The Client secret is not checked when using the OAuth Password grant type.

By exploiting this vulnerability, an attacker could connect to a web server using a client application not explicitly authorized as part of the OAuth deployment.
Exploitation requires valid credentials and does not permit the attacker to bypass user privileges.

Weakness: CWE-358 (Improperly Implemented Security Check for Standard)

## Which versions are affected by CVE-2024-12056?


## How do I fix CVE-2024-12056?

No fix has been published for CVE-2024-12056 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-12056 being exploited?

There is no known exploitation of CVE-2024-12056 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-12056 and fix it if it is affected.

What it is: CVE-2024-12056 is a low-severity authentication bypass vulnerability in arcinfo PcVue, published on 4 Dec 2024. 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-2024-12056 in the wild and no public exploit code.

Affected product: arcinfo PcVue. 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-2024-12056/ (Markdown: https://insights.sbomify.com/CVE-2024-12056/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-12056
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-12056
- OSV: https://osv.dev/vulnerability/CVE-2024-12056

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-12056/
Summaries are generated and may contain mistakes; the official description above is the record.