How severe is CVE-2025-47952?

CVE-2025-47952 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2025-47952 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-47952?

CVE-2025-47952 affects Traefik. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-47952?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-47952 have an EU (EUVD) identifier?

Yes. CVE-2025-47952 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16447.

When was CVE-2025-47952 published?

CVE-2025-47952 was published on 2025-05-30 and last updated on 2026-06-17.

CVE-2025-47952

CVE-2025-47952 is a critical-severity vulnerability in Traefik with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v4: 2.9
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-16447
Weakness: CWE-22
Affected product: Traefik
Published: 2025-05-30
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2025-47952?: 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.
How severe is CVE-2025-47952?: CVE-2025-47952 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2025-47952 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-47952?: CVE-2025-47952 affects Traefik. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-47952?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-47952 have an EU (EUVD) identifier?: Yes. CVE-2025-47952 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16447.
When was CVE-2025-47952 published?: CVE-2025-47952 was published on 2025-05-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*

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