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Vulnerabilities

Vulnerability · CVE-2025-47952

Traefik (pronounced traffic) is an HTTP reverse proxy and load balancer.

Published May 30, 2025 · catalog updated May 30, 2025 · Traefik (pronounced traffic) is

Check this week

CVE-2025-47952 is not in CISA KEV. FIRST estimates a 94.00% chance of exploitation in the next 30 days. Check whether you run Traefik (pronounced traffic) is.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Traefik (pronounced traffic) is).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Low2.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
94.00%
Remediation
Version ranges on file
Affected products
vendor traefik traefik < 3.4.1

Traefik (pronounced traffic) is an HTTP reverse proxy and load balancer. Prior to versions 2.11.25 and 3.4.1, there is a potential vulnerability in Traefik managing the requests using a PathPrefix, Path or PathRegex matcher. When Traefik is configured to route the requests to a backend using a matcher based on the path, if the URL contains a URL encoded string in its path, it’s possible to target a backend, exposed using another router, by-passing the middlewares chain. This issue has been patched in versions 2.11.25 and 3.4.1.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor traefik traefik < 3.4.1< 3.4.1

How to fix CVE-2025-47952

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-47952 is not in CISA KEV. FIRST estimates a 94.00% chance of exploitation in the next 30 days. Check whether you run Traefik (pronounced traffic) is.

Which versions are affected?

Compare what you have installed with traefik traefik < 3.4.1 < 3.4.1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 94.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. May 30, 2025 · EUVD

    Detected

    Traefik (pronounced traffic) is an HTTP reverse proxy and load balancer. Prior to versions 2.11.25 and 3.4.1, there is a potential vulnerability in Traefik managing the requests using a PathPrefix, Path or PathRegex matcher. When Traefik is configured to route the requests to a backend using a matcher based on the path, if the URL contains a URL encoded string in its path, it’s possible to target

  2. May 30, 2025 · EUVD

    Updated

    Traefik (pronounced traffic) is an HTTP reverse proxy and load balancer. Prior to versions 2.11.25 and 3.4.1, there is a potential vulnerability in Traefik managing the requests using a PathPrefix, Path or PathRegex matcher. When Traefik is configured to route the requests to a backend using a matcher based on the path, if the URL contains a URL encoded string in its path, it’s possible to target

Sources

  • CVE.orgVulnerability recordCVE-2025-47952

    Official CVE identifier

    cve.org
  • EUVDVulnerability recordEUVD-2025-16447

    Traefik (pronounced traffic) is an HTTP reverse proxy and load balancer. Prior to versions 2.11.25 and 3.4.1, there is a potential vulnerability in Traefik managing the requests using a PathPrefix, Path or PathRegex matcher. When Traefik is configured to route the requests to a b

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog May 30, 2025. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.