# CVE-2022-48021: Code injection in n/a

> Attackers can execute arbitrary code or escalate privileges in Zammad by sending a crafted message to the server.

- **Severity:** Critical 9.8 (`CVSS:3.1/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:** 3 Feb 2023
- **Updated:** 26 Mar 2025
- **Also known as:** GHSA-v66q-xfc3-6q83

## What is CVE-2022-48021?

CVE-2022-48021 is a critical code injection vulnerability in Zammad Zammad, published on 3 Feb 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability in Zammad v5.3.0 allows attackers to execute arbitrary code or escalate privileges via a crafted message sent to the server.

## Which versions are affected by CVE-2022-48021?

It affects 1 product.


Products: Zammad Zammad.

## How do I fix CVE-2022-48021?

No fix has been published for CVE-2022-48021 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-48021 being exploited?

There is no known exploitation of CVE-2022-48021 in the wild and no public exploit code.

## Other vulnerabilities in Zammad Zammad

- [CVE-2026-102489](https://insights.sbomify.com/CVE-2026-102489/): Zammad GmbH Zammad Session Fixation (high 8.7, exploited in the wild)
- [CVE-2026-102490](https://insights.sbomify.com/CVE-2026-102490/): Zammad GmbH Zammad Improper Privilege Management (high 8.5, exploited in the wild)
- [CVE-2022-35490](https://insights.sbomify.com/CVE-2022-35490/): Security feature bypass in n/a (critical 9.8)
- [CVE-2021-42090](https://insights.sbomify.com/CVE-2021-42090/): Deserialization in n/a (critical 9.8)
- [CVE-2021-42094](https://insights.sbomify.com/CVE-2021-42094/): Command injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-48021 and fix it if it is affected.

What it is: CVE-2022-48021 is a critical code injection vulnerability in Zammad Zammad, published on 3 Feb 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-2022-48021 in the wild and no public exploit code.

Affected product: Zammad Zammad. 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-2022-48021/ (Markdown: https://insights.sbomify.com/CVE-2022-48021/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-48021
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-48021
- OSV: https://osv.dev/vulnerability/CVE-2022-48021

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-48021/
Summaries are generated and may contain mistakes; the official description above is the record.