# GHSA-7f4j-64p6-5h5v: Traefik affected by HTTP/2 CONTINUATION flood in net/http

> Traefik is vulnerable to HTTP/2 CONTINUATION flood attacks, allowing remote attackers to cause denial of service.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 15 Apr 2024
- **Also known as:** GO-2024-2726

## What is GHSA-7f4j-64p6-5h5v?

GHSA-7f4j-64p6-5h5v is a denial of service vulnerability in github.com/traefik/traefik, published on 15 Apr 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

There is a potential vulnerability in Traefik managing HTTP/2 connections.

More details in the [CVE-2023-45288](https://www.cve.org/CVERecord?id=CVE-2023-45288).

## Patches

- https://github.com/traefik/traefik/releases/tag/v2.11.2
- https://github.com/traefik/traefik/releases/tag/v3.0.0-rc5

## Workarounds

No workaround

## For more information

If you have any questions or comments about this advisory, please [open an issue](https://github.com/traefik/traefik/issues).

## Which versions are affected by GHSA-7f4j-64p6-5h5v?

7 open source packages ship an affected version, including github.com/traefik/traefik/v2, github.com/traefik/traefik and github.com/traefik/traefik/v3.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `github.com/traefik/traefik/v2` | Go | All versions | 2.11.2 |
| `github.com/traefik/traefik/v2` | Go | All versions | 2.11.2 |
| `github.com/traefik/traefik/v2` | Go | All versions | 2.11.2 |
| `github.com/traefik/traefik` | Go | All versions | None |
| `github.com/traefik/traefik/v3` | Go | From 3.0.0-rc1 | 3.0.0-rc5 |
| `github.com/traefik/traefik/v3` | Go | From 3.0.0-rc1 | 3.0.0-rc5 |
| `github.com/traefik/traefik/v3` | Go | From 3.0.0-rc1 | 3.0.0-rc5 |

## How do I fix GHSA-7f4j-64p6-5h5v?

Upgrade github.com/traefik/traefik/v2 to 2.11.2 or later.

## Is GHSA-7f4j-64p6-5h5v being exploited?

There is no known exploitation of GHSA-7f4j-64p6-5h5v in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for GHSA-7f4j-64p6-5h5v and fix it if it is affected.

What it is: GHSA-7f4j-64p6-5h5v is a denial of service vulnerability in github.com/traefik/traefik, published on 15 Apr 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of GHSA-7f4j-64p6-5h5v in the wild and no public exploit code.

Affected packages and fixed versions:
- github.com/traefik/traefik/v2 (Go): affected all versions; fixed in 2.11.2
- github.com/traefik/traefik/v2 (Go): affected all versions; fixed in 2.11.2
- github.com/traefik/traefik/v2 (Go): affected all versions; fixed in 2.11.2
- github.com/traefik/traefik (Go): affected all versions; no fix listed
- github.com/traefik/traefik/v3 (Go): affected from 3.0.0-rc1; fixed in 3.0.0-rc5
- github.com/traefik/traefik/v3 (Go): affected from 3.0.0-rc1; fixed in 3.0.0-rc5
- github.com/traefik/traefik/v3 (Go): affected from 3.0.0-rc1; fixed in 3.0.0-rc5

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/GHSA-7f4j-64p6-5h5v/ (Markdown: https://insights.sbomify.com/GHSA-7f4j-64p6-5h5v/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/GHSA-7f4j-64p6-5h5v

---
From sbomify Insights: https://insights.sbomify.com/GHSA-7f4j-64p6-5h5v/
Summaries are generated and may contain mistakes; the official description above is the record.