How severe is CVE-2025-32431?

No CVSS score has been assigned to CVE-2025-32431 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2025-32431?

CVE-2025-32431 affects the following packages: github.com/traefik/traefik (Go), github.com/traefik/traefik/v2 (Go), github.com/traefik/traefik/v3 (Go), github.com/traefik/traefik/v3 (Go). Ecosystems affected: Go.

How do I fix CVE-2025-32431?

No patched version of github.com/traefik/traefik has shipped for CVE-2025-32431 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.

How do I detect CVE-2025-32431 in my Go dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/traefik/traefik, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2025-32431 if there is no patch (or I can't update yet)?

Resolve every user-supplied path to its canonical form and reject anything that escapes the intended directory, and run the component under an account that has no read or write access outside the directory it legitimately serves.

How does O3 Security protect against CVE-2025-32431?

O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2025-32431 can be triaged on real exposure rather than presence alone.

Is CVE-2025-32431 actively exploited in the wild?

No public exploit code has been indexed for CVE-2025-32431 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2025-32431?

CVE-2025-32431 has an EPSS (Exploit Prediction Scoring System) score of 0.9%, placing it in the 59th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2025-32431?

CVE-2025-32431 is classified as Path Traversal (CWE-22). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2025-32431 published, and has it been updated?

CVE-2025-32431 was published on April 21, 2025 and was last updated on August 12, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐹 Go

Not in CISA KEV

CVE-2025-32431 — traefik

Fix: traefik/traefik#11684

CVE-2025-32431 is a Path Traversal vulnerability in github.com/traefik/traefik. A fix is available for github.com/traefik/traefik — see the affected versions and patch details below.

Traefik has a possible vulnerability with the path matchers

Also known asGHSA-6p68-w45g-48j7GO-2025-3634

Published

Apr 21, 2025

Updated

Aug 12, 2026

Affected

4 pkgs

Patched

3 / 4

Exploits

None indexed

Exploitation data as of Sep 26, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
A successful exploit gives an attacker total control of the affected component, not partial access.
CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2025-32431.

EPSS Exploitation Probability

via FIRST.org ↗

0.9%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs59th percentile — riskier than 59% of all scored CVEsHighest risk

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Real-World Exposure

4 pkgs affected

🐹github.com/traefik/traefik🐹github.com/traefik/traefik/v2🐹github.com/traefik/traefik/v3🐹github.com/traefik/traefik/v3

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.

Description

Impact

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.

Example

apiVersion: traefik.io/v1alpha1
kind: IngressRoute
metadata:
  name: my-service
spec:
  routes:
    - match: PathPrefix(‘/service’)
      kind: Rule
      services:
        - name: service-a
          port: 8080
      middlewares:
        - name: my-middleware-a
    - match: PathPrefix(‘/service/sub-path’)
      kind: Rule
      services:
        - name: service-a
          port: 8080

In such a case, the request http://mydomain.example.com/service/sub-path/../other-path will reach the backend my-service-a without operating the middleware my-middleware-a unless the computed path is http://mydomain.example.com/service/other-path and should be computes by the first router (operating my-middleware-a).

Patches

Workaround

Add a PathRegexp rule to the matcher to prevent matching a route with a /../ in the path.

Example:

match: PathPrefix(`/service`) && !PathRegexp(`(?:(/\.\./)+.*)`)

For more information

If you have any questions or comments about this advisory, please open an issue.

Affected Packages

4 total 3 fixed

Ecosystem	Package	Vulnerable range	Fix
🐹Go	`github.com/traefik/traefik`	all versions	No fix
🐹Go	`github.com/traefik/traefik/v2`	all versions	2.11.23`go get github.com/traefik/traefik/v2@v2.11.23`
🐹Go	`github.com/traefik/traefik/v3`	all versions	3.3.6`go get github.com/traefik/traefik/v3@v3.3.6`
🐹Go	`github.com/traefik/traefik/v3`	≥ 3.4.0-rc1&&< 3.4.0-rc2	3.4.0-rc2`go get github.com/traefik/traefik/v3@v3.4.0-rc2`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/traefik/traefik, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
No patched version of github.com/traefik/traefik has shipped for CVE-2025-32431 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Workarounds
Resolve every user-supplied path to its canonical form and reject anything that escapes the intended directory, and run the component under an account that has no read or write access outside the directory it legitimately serves.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2025-32431 can be triaged on real exposure rather than presence alone.

Tailored to CVE-2025-32431. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

## Impact 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. ## Example ```yaml apiVersion: traefik.io/v1alpha1 kind: IngressRoute metadata: name: my-service spec: routes: - match: PathPrefix(‘/service’) kind: Rule services: - name: service-a port: 8

O3 Security · Impact-Aware SCA

Is CVE-2025-32431 in your dependencies?

O3 Security finds CVE-2025-32431 across Go dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

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