# CVE-2022-26924: YARP Denial of Service Vulnerability


- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C`)
- **Exploited in the wild:** Not known
- **Fix available:** Yes
- **Published:** 15 Apr 2022
- **Updated:** 2 Jan 2025
- **Also known as:** GHSA-8xc6-g8xw-h2c4

## What is CVE-2022-26924?

CVE-2022-26924 is a high-severity vulnerability in Microsoft YARP 1.0, published on 15 Apr 2022. 

### Official description

YARP Denial of Service Vulnerability

## Which versions are affected by CVE-2022-26924?

4 open source packages ship an affected version, including Yarp.ReverseProxy. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `Yarp.ReverseProxy` | NuGet | All versions | 1.0.1 |
| `Yarp.ReverseProxy` | NuGet | All versions | 1.0.1 |
| `Yarp.ReverseProxy` | NuGet | From 1.1.0-rc.1.22152.1 | 1.1.0-rc.1.22211.2 |
| `Yarp.ReverseProxy` | NuGet | From 1.1.0-rc.1.22152.1 | 1.1.0-rc.1.22211.2 |

Products: Microsoft Yet Another Reverse Proxy.

## How do I fix CVE-2022-26924?

Upgrade Yarp.ReverseProxy to a fixed version for your release line: 1.0.1 or 1.1.0-rc.1.22211.2.

## Is CVE-2022-26924 being exploited?

There is no known exploitation of CVE-2022-26924 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft YARP 1.0

- [CVE-2023-33141](https://insights.sbomify.com/CVE-2023-33141/): Yet Another Reverse Proxy (YARP) Denial of Service Vulnerability (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-26924 and fix it if it is affected.

What it is: CVE-2022-26924 is a high-severity vulnerability in Microsoft YARP 1.0, published on 15 Apr 2022. 
Exploitation: There is no known exploitation of CVE-2022-26924 in the wild and no public exploit code.

Affected packages and fixed versions:
- Yarp.ReverseProxy (NuGet): affected all versions; fixed in 1.0.1
- Yarp.ReverseProxy (NuGet): affected all versions; fixed in 1.0.1
- Yarp.ReverseProxy (NuGet): affected from 1.1.0-rc.1.22152.1; fixed in 1.1.0-rc.1.22211.2
- Yarp.ReverseProxy (NuGet): affected from 1.1.0-rc.1.22152.1; fixed in 1.1.0-rc.1.22211.2

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-2022-26924/ (Markdown: https://insights.sbomify.com/CVE-2022-26924/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-26924
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-26924
- OSV: https://osv.dev/vulnerability/CVE-2022-26924

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-26924/
Summaries are generated and may contain mistakes; the official description above is the record.