# CVE-2022-48476: Path traversal in Ktor

> An attacker can exploit a path traversal vulnerability in the resolveResource method to read arbitrary files from the server.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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:** 24 Apr 2023
- **Updated:** 4 Feb 2025
- **Also known as:** GHSA-pw38-42w8-qm8m

## What is CVE-2022-48476?

CVE-2022-48476 is a high-severity path traversal vulnerability in JetBrains Ktor, published on 24 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

In JetBrains Ktor before 2.3.0 path traversal in the `resolveResource` method was possible

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory), CWE-35 (Path Traversal: '.../...//')

## Which versions are affected by CVE-2022-48476?

It affects 1 product.


Products: Jetbrains Ktor.

## How do I fix CVE-2022-48476?

No fix has been published for CVE-2022-48476 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-48476 being exploited?

There is no known exploitation of CVE-2022-48476 in the wild and no public exploit code.

## Other vulnerabilities in JetBrains Ktor

- [CVE-2019-12736](https://insights.sbomify.com/CVE-2019-12736/): Command injection in n/a (critical 9.8)
- [CVE-2022-29930](https://insights.sbomify.com/CVE-2022-29930/): SHA1 implementation in JetBrains Ktor Native 2.0.0 was returning the same value. (high 8.7)
- [CVE-2023-45612](https://insights.sbomify.com/CVE-2023-45612/): XML external entity in Ktor (high 8.6)
- [CVE-2021-43203](https://insights.sbomify.com/CVE-2021-43203/): Auth bypass in n/a (high 7.5)
- [CVE-2023-45613](https://insights.sbomify.com/CVE-2023-45613/): Security feature bypass in Ktor (medium 6.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-48476 and fix it if it is affected.

What it is: CVE-2022-48476 is a high-severity path traversal vulnerability in JetBrains Ktor, published on 24 Apr 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-2022-48476 in the wild and no public exploit code.

Affected product: JetBrains Ktor. 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-2022-48476/ (Markdown: https://insights.sbomify.com/CVE-2022-48476/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-48476
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-48476
- OSV: https://osv.dev/vulnerability/CVE-2022-48476

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-48476/
Summaries are generated and may contain mistakes; the official description above is the record.