# CVE-2022-24789: Deserialization of untrusted data in C1 CMS.

> Authenticated users can trigger SSRF and file truncation in C1 CMS, potentially causing denial of service or data exposure.

- **Severity:** High 7.6 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 28 Mar 2022
- **Updated:** 23 Apr 2025
- **Also known as:** GHSA-8pp6-8x4q-c5mx, GHSA-j9c2-gr6m-pp45

## What is CVE-2022-24789?

CVE-2022-24789 is a high-severity server-side request forgery vulnerability in Orckestra C1-CMS-Foundation, published on 28 Mar 2022. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

C1 CMS is an open-source, .NET based Content Management System (CMS). Versions prior to 6.12 allow an authenticated user to exploit Server Side Request Forgery (SSRF) by causing the server to make arbitrary GET requests to other servers in the local network or on localhost. The attacker may also truncate arbitrary files to zero size (effectively delete them) leading to denial of service (DoS) or altering application logic. The authenticated user may unknowingly perform the actions by visiting a specially crafted site. Patched in C1 CMS v6.12, no known workarounds exist.

Weakness: CWE-918 (Server-Side Request Forgery)

## Which versions are affected by CVE-2022-24789?

2 open source packages ship an affected version, including C1CMS.Assemblies. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `C1CMS.Assemblies` | NuGet | All versions | 6.12.8122.18346 |
| `C1CMS.Assemblies` | NuGet | All versions | 6.12.8122.18346 |

Products: Orckestra C1 Cms.

## How do I fix CVE-2022-24789?

Upgrade C1CMS.Assemblies to 6.12.8122.18346 or later.

## Is CVE-2022-24789 being exploited?

There is no known exploitation of CVE-2022-24789 in the wild and no public exploit code.

## Other vulnerabilities in Orckestra C1-CMS-Foundation

- [CVE-2022-39256](https://insights.sbomify.com/CVE-2022-39256/): Orckestra C1 CMS's deserialization of untrusted data allows for arbitrary code execution. (critical 9.0)
- [CVE-2021-34992](https://insights.sbomify.com/CVE-2021-34992/): Deserialization in C1 CMS (high 8.8)
- [CVE-2019-18211](https://insights.sbomify.com/CVE-2019-18211/): Deserialization in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-24789 and fix it if it is affected.

What it is: CVE-2022-24789 is a high-severity server-side request forgery vulnerability in Orckestra C1-CMS-Foundation, published on 28 Mar 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-24789 in the wild and no public exploit code.

Affected packages and fixed versions:
- C1CMS.Assemblies (NuGet): affected all versions; fixed in 6.12.8122.18346
- C1CMS.Assemblies (NuGet): affected all versions; fixed in 6.12.8122.18346

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-2022-24789/ (Markdown: https://insights.sbomify.com/CVE-2022-24789/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-24789
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-24789
- OSV: https://osv.dev/vulnerability/CVE-2022-24789

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-24789/
Summaries are generated and may contain mistakes; the official description above is the record.