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CVE-2026-119572high8.7

Traefik 3.7.0-ea.1 before 3.7.15 mTLS Bypass via Ingress NGINX Provider

Impact

Traefik versions 3.7.0-ea.1 before 3.7.15 contain an authentication bypass vulnerability in the Kubernetes Ingress NGINX provider, allowing unauthenticated attackers to reach backends requiring client certificates. The vulnerability occurs when another Ingress declares a path on the same host without matching auth-tls settings. Traefik falls back to default TLS options, silently disabling mTLS.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

traefik · VulnCheck

traefik

2 ranges
VulnCheck version evidence

Package identity

pkg:golang/github.com/traefik/traefik/v3Explore github.com/traefik/traefik/v3 →

Identity supplied by VulnCheck. Version matching requires compatible range evidence.

Compare with this publisher’s ranges. This does not inspect your installation.

affected

3.7.0-ea.1 → before 3.7.15

semver versions

unaffected

3.7.15

semver versions

unknown

Other versions: unaffected

Original source description

Traefik from 3.7.0-ea.1 before 3.7.15 contains an authentication bypass vulnerability in the Kubernetes Ingress NGINX provider that silently disables mTLS configured via the auth-tls-secret annotation. When another Ingress declares a path on the same host without matching auth-tls settings, Traefik falls back to default TLS options, letting unauthenticated attackers reach backends requiring client certificates.

Inside the record

Evidence available

Package identity
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers · not supplied

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-119572

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-287 ↗

Improper Authentication

VulnCheck

Related →

Environment requirements

These conditions apply together as specified by the publisher. A matching product name alone does not establish exposure.

VulnCheck · platform conditions

Any condition may hold

Vulnerable product

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

From (inclusive): 3.7.0-ea.1

Before: 3.7.15

Original applicability statements
[
  {
    "nodes": [
      {
        "operator": "OR",
        "negate": false,
        "cpeMatch": [
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "3.7.0-ea.1",
            "versionEndExcluding": "3.7.15"
          }
        ]
      }
    ]
  }
]
Contributing organizations · 1
VulnCheck

Assigning organization

2026-10-30

What changed

Follow changes
No substantive changes have been recorded here yet. History starts when cve.new observes a change after tracking is enabled; earlier edits are not reconstructed.

Large field values are marked as truncated previews. Original source snapshots remain retained.

References

2 sources
github.com/traefik/traefik/security/advisories/GHSA-p8wx-ph99-xgcr
vendor-advisoryVulnCheck
www.vulncheck.com/advisories/traefik-3.7.0-ea.1-before-3.7.15-mtls-bypass-via-ingress-nginx-provider
third-party-advisoryVulnCheck