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CVE-2026-94135

Status: Awaiting AnalysisMedium (4.3)—
Severity4.3Medium · CVSS 3.1
Exploitation probability0.22 %higher than 12% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

The Apache Airflow SFTP provider's deferrable code paths (`SFTPTrigger`, `SFTPHookAsync`, `SFTPClientPool`) disable SSH host-key verification by default unless the connection explicitly sets `no_host_key_check` to false. Deployments that run SFTP sensors or operators in deferrable mode are affected. An attacker in a machine-in-the-middle position between the triggerer and the SFTP server can impersonate the server and capture the credentials or data exchanged.

Users of apache-airflow-providers-sftp are recommended to upgrade to apache-airflow-providers-sftp 7.0.0 or later.

Read full descriptionShow less

This is a separate defect from CVE-2026-94134 (the synchronous SSH hook default, which also affects the SFTP hook); users who applied the fix for one also need this release for the other - apache-airflow-providers-sftp 7.0.0 fixes both.

CVSS

Base score
4.3
Version
3.1
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
0.22 %
Percentile among all scored CVEs
12
Score date
10/21/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

El vector UI:R exige interacción del usuario, lo que da T1203 aunque el acceso sea de red. El texto dice que un MITM puede capturar credenciales y datos intercambiados, lo que sustenta T1040.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

ATT&CK mitigations that cover these techniques

User Account ManagementNetwork SegmentationMulti-factor AuthenticationEncrypt Sensitive InformationApplication Isolation and SandboxingExploit Protection

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Apache — Apache-airflow-providers-sftpAI

CWEs

References

Show 3 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2026-94135",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-94135",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-10-16T14:46:17.150791Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 4.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@apache.org",
      "affectedData": [
        {
          "vendor": "Apache Software Foundation",
          "product": "Apache Airflow SFTP provider",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "7.0.0",
              "versionType": "semver"
            }
          ],
          "packageURL": "pkg:pypi/apache-airflow-providers-sftp",
          "packageName": "apache-airflow-providers-sftp",
          "collectionURL": "https://pypi.python.org",
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-10-15T22:21:12.140",
  "references": [
    {
      "url": "https://github.com/apache/airflow/pull/73419",
      "source": "security@apache.org"
    },
    {
      "url": "https://lists.apache.org/thread/jbzs97t9y1zd1yp5rvxzjbx90mqz82kf",
      "source": "security@apache.org"
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    {
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-94134",
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  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
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      "type": "Secondary",
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      "description": [
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  "descriptions": [
    {
      "lang": "en",
      "value": "The Apache Airflow SFTP provider's deferrable code paths (`SFTPTrigger`, `SFTPHookAsync`, `SFTPClientPool`) disable SSH host-key verification by default unless the connection explicitly sets `no_host_key_check` to false. Deployments that run SFTP sensors or operators in deferrable mode are affected. An attacker in a machine-in-the-middle position between the triggerer and the SFTP server can impersonate the server and capture the credentials or data exchanged.\n\nUsers of apache-airflow-providers-sftp are recommended to upgrade to apache-airflow-providers-sftp 7.0.0 or later. This is a separate defect from CVE-2026-94134 (the synchronous SSH hook default, which also affects the SFTP hook); users who applied the fix for one also need this release for the other - apache-airflow-providers-sftp 7.0.0 fixes both."
    }
  ],
  "lastModified": "2026-10-16T15:20:39.130",
  "sourceIdentifier": "security@apache.org"
}