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CVE-2026-114635

CVE-2026-114635

validatedZero produced an exploit or a check.

GHSA-fh26-gfpp-7xxx ↗

check availableZero validated a working check for it.not proven exploitableZero has a detection check, but hasn't produced a full working exploit yet.
cve.org+11dpublic pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).kevAttacks confirmed in the real world.
traefik <= v2.11.57; >= v3.0.0, <= v3.7.13
fixed in v2.11.58, v3.7.14
CWE-288 Authentication Bypass Using an Alternate Path or Channel
ETK-2026-2379Zero's internal tracking ID, independent of the CVE number., permanent identifier
pkg:golang/Traefik
cvss7.0cna vendorCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
−11dTTV
25mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = trigger signal
trigger signal +0dcheck available+4.1dagent stoppedcve.org publication+15d
0
+5d
+10d

description

Traefik versions before 2.11.58 and 3.7.14 can bypass SNI-based client-certificate enforcement for protected routers. An unauthenticated remote client may reach those routers without a client certificate when Traefik is built with Go 1.27 and processes affected TLS HTTP/2 requests.

mitigation

Upgrade Traefik to 2.11.58 or later in the 2.x line, or 3.7.14 or later in the 3.x line. Until upgraded, restrict exposure of client-certificate-protected routers and avoid affected Go 1.27 deployments where feasible.

fixed in v2.11.58, v3.7.14

check
available
exploit
no
automationDeterministic: a check that runs on its own, the same request on every target. Contextual: an agentic technique that needs to be applied per target, for bugs that depend on contextual flows.
contextual
auth requiredWhether an attacker needs an account first, based on the CVSS vector's Privileges Required.
no
EPSSEstimate of the chance this CVE is exploited in the next 30 days. Refreshed daily.
–
agent run time
25m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-10-22 01:43Z
Δ to public pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).
–
Δ to kevAttacks confirmed in the real world.
–

outcome

Check only, differential: the check fires on the vulnerable build and is silent on the patched one.

source signals

Public signals that triggered or updated the pipeline. These are inputs for the deltas above.

  1. 2026-10-07 08:47Z
  2. 2026-10-22 01:43Z
    cve_org: trigger signal, started the run
    https://www.cve.org/CVERecord?id=CVE-2026-114635

this entry in the feed

GET /api/v1/feed/CVE-2026-114635

{
  "etk_id": "ETK-2026-2379",
  "cve_id": "CVE-2026-114635",
  "display_id": "CVE-2026-114635",
  "ghsa_id": "GHSA-fh26-gfpp-7xxx",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "anchored",
  "title": "Client-certificate authentication bypass in Traefik SNI checks",
  "summary": "Traefik versions before 2.11.58 and 3.7.14 can bypass SNI-based client-certificate enforcement for protected routers. An unauthenticated remote client may reach those routers without a client certificate when Traefik is built with Go 1.27 and processes affected TLS HTTP/2 requests.",
  "mitigation": "Upgrade Traefik to 2.11.58 or later in the 2.x line, or 3.7.14 or later in the 3.x line. Until upgraded, restrict exposure of client-certificate-protected routers and avoid affected Go 1.27 deployments where feasible.",
  "vendor": "traefik",
  "product": "traefik",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= v2.11.57"
      ],
      "ecosystem": "go",
      "fixed_versions": [
        "v2.11.58"
      ],
      "package_name": "Traefik",
      "purl": "pkg:golang/Traefik"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= v3.0.0, <= v3.7.13"
      ],
      "ecosystem": "go",
      "fixed_versions": [
        "v3.7.14"
      ],
      "package_name": "Traefik",
      "purl": "pkg:golang/Traefik"
    }
  ],
  "cwes": [
    288
  ],
  "cvss_score": 7,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": false,
  "pipeline_minutes": 24.67331635,
  "t0_at": "2026-10-22T01:43:36.508000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-11T11:00:10.190555+00:00",
      "days": -10.613499044502316,
      "is_lower_bound": false,
      "measured_at": "2026-10-22T01:43:36.508000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-07T08:47:28+00:00",
      "days": -14.705654027777777,
      "is_lower_bound": false,
      "measured_at": "2026-10-22T01:43:36.508000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-114635"
    }
  }
}

published 2026-10-22 02:24Z
last change 2026-10-22 03:42Z

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