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CVE-2025-32431

Traefik path traversal

9.1 CRITICALEPSS 0.93%
  1. Published21 Apr 2025

Description

Traefik (pronounced traffic) is an HTTP reverse proxy and load balancer. In versions prior to 2.11.24, 3.3.6, and 3.4.0-rc2. 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 /../ 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 2.11.24, 3.3.6, and 3.4.0-rc2. A workaround involves adding a `PathRegexp` rule to the matcher to prevent matching a route with a `/../` in the path.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

Traefik≥ 3.0.0 < 3.3.6 · < 2.11.24 · 3.4.0

Remediation

Fixed in
Traefik≥ 3.3.6

References

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Frequently asked

Is CVE-2025-32431 being actively exploited?

CVE-2025-32431 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.93%.

How severe is CVE-2025-32431?

CVE-2025-32431 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.93% probability of exploitation.

Which products are affected by CVE-2025-32431?

Affected products include Traefik.

How do I fix CVE-2025-32431?

Upgrade affected software to a fixed version, for example Traefik 3.3.6 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-32431 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.