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🛡️ CVE-2024-52003 — traefik

🟡 CVSS 6.1 — Medium ✅ No Known Exploit NVD
6.1
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Traefik's X-Forwarded-Prefix Header still allows for Open Redirect

Impact

There is a vulnerability in Traefik that allows the client to provide the X-Forwarded-Prefix header from an untrusted source.

Patches

  • https://github.com/traefik/traefik/releases/tag/v2.11.14
  • https://github.com/traefik/traefik/releases/tag/v3.2.1

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).

<details>

<summary>Original Description</summary>

Summary

The previously reported open redirect ([GHSA-6qq8-5wq3-86rp](https://github.com/traefik/traefik/security/advisories/GHSA-6qq8-5wq3-86rp)) is not fixed correctly. The safePrefix function can be tricked to return an absolute URL.

Details

The Traefik API [dashboard component](https://github.com/traefik/traefik/blob/master/pkg/api/dashboard/dashboard.go) tries to validate that the value of the header X-Forwarded-Prefix is a site relative path:

```go

http.Redirect(resp, req, safePrefix(req)+"/dashboard/", http.StatusFound)

```

```go

func safePrefix(req *http.Request) string {

prefix := req.Header.Get("X-Forwarded-Prefix")

if prefix == "" {

return ""

}

parse, err := url.Parse(prefix)

if err != nil {

return ""

}

return parse.Path

}

```

PoC

An attacker can bypass this by sending the following payload:

```bash

curl -v 'http://traefik.localhost' -H 'X-Forwarded-Prefix: %0d//a.com'

[...]

> HTTP/1.1 302 Found

> Location: //a.com/dashboard/

```

or similar:

```bash

curl -v 'http://traefik.localhost' -H 'X-Forwarded-Prefix: %2f%2fa.com'

[...]

> HTTP/1.1 302 Found

> Location: //a.com/dashboard/

```

Impact

Similar to the previously reported bug. In cache poisoning scenarios this may be exploitable.

</details>

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality low, integrity low, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: Required — someone has to click, open or visit something.
  • Scope: Changed — a successful attack reaches components beyond the vulnerable one.
  • Confidentiality impact: Low — limited, and the attacker does not choose what is affected.
  • Integrity impact: Low — limited, and the attacker does not choose what is affected.
  • Availability impact: None.

Affected software

CVE-2024-52003 is recorded against 4 packages.

  • github.com/traefik/traefik
  • github.com/traefik/traefik/v2
  • github.com/traefik/traefik/v3
  • traefik (from 3.0.0 up to 3.2.1)

Timeline and source

Published on 2 December 2024 and last revised on 4 February 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

github.com (Advisory)
nvd.nist.gov (Advisory)
github.com (Fix)
github.com (Web)
github.com (Web)

Other advisories for this package

github.com/traefik/traefik has other advisories on record. If you are patching this one, these are worth checking on the same host:

Details

Severity Medium
CVSS Score 6.1
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2024-12-02
Updated 2026-08-20
Modified 2026-02-04

Affected Packages

Software From version Fixed in
github.com/traefik/traefik — —
github.com/traefik/traefik/v2 — —
github.com/traefik/traefik/v3 — —
traefik 3.0.0 3.2.1

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