CVE-2024-28869 Possible denial of service vulnerability with Content-length header in Traefik
Attackers can cause indefinite hangs in Traefik by sending GET requests with a Content-length header, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-28869?
CVE-2024-28869 is a high-severity denial of service vulnerability in Traefik Traefik, published on 12 Apr 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Traefik is an HTTP reverse proxy and load balancer. In affected versions sending a GET request to any Traefik endpoint with the "Content-length" request header results in an indefinite hang with the default configuration. This vulnerability can be exploited by attackers to induce a denial of service. This vulnerability has been addressed in version 2.11.2 and 3.0.0-rc5. Users are advised to upgrade. For affected versions, this vulnerability can be mitigated by configuring the readTimeout option.
Weakness: CWE-755
Which versions are affected by CVE-2024-28869?
9 open source packages ship an affected version, including github.com/traefik/traefik, github.com/traefik/traefik/v2 and github.com/traefik/traefik/v3. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/traefik/traefik Go | All versions | None |
github.com/traefik/traefik Go | All versions | 2.11.2 |
github.com/traefik/traefik 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/v2 Go | All versions | 2.11.2 |
3 more packages
github.com/traefik/traefik/v3 Go | From 3.0.0-beta3 | 3.0.0-rc5 |
github.com/traefik/traefik/v3 Go | From 3.0.0-beta3 | 3.0.0-rc5 |
github.com/traefik/traefik/v3 Go | From 3.0.0-beta3 | 3.0.0-rc5 |
Products include Traefik Traefik.
How do I fix CVE-2024-28869?
Upgrade github.com/traefik/traefik to 2.11.2 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2024-28869 being exploited?
There is no known exploitation of CVE-2024-28869 in the wild and no public exploit code.
Other vulnerabilities in Traefik Traefik
- CVE-2024-45410 HTTP client can remove the X-Forwarded headers in Traefik
- CVE-2026-88877 Traefik v3.7.0 Authentication Bypass via from-to-www-redirect
- CVE-2026-85595 Traefik before v2.11.55 and v3.0.0 through v3.7.10 Authentication Bypass via digestAuth
- CVE-2026-88007 Traefik HTTP/3 Backend NTLM Connection Reuse
- CVE-2026-88009 Traefik: Rootless HTTP/1 request-target routes as "/" but is forwarded verbatim, bypassing path-scoped routing, middleware guards and access logging
Sources
Also known as ECHO-f160-1deb-c3b0, GHSA-4vwx-54mw-vqfw, GO-2024-2722.