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CVE-2026-86467

Status: Awaiting AnalysisUnscored—
Severity—Unscored
Exploitation probability0.17 %higher than 6% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

Apache Airflow Amazon provider: the AWS auth manager's SAML login flow does not bind the authentication response to the browser that began it. The login handler discards the AuthnRequest ID and the callback validates the assertion without requiring a matching InResponseTo, so an unauthenticated attacker who can cause a victim to load a page can complete a SAML login in the victim's browser using the attacker's own assertion, silently logging the victim into the attacker's Airflow account. Subsequent work the victim performs lands in a session the attacker controls.

Affects deployments using the AWS auth manager with SAML authentication. The victim needs only to visit an attacker-controlled page; no Airflow account or credential is required of the attacker.

Read full descriptionShow less

This is the same login-CSRF class fixed in the Keycloak auth manager as CVE-2026-40948.

Users of apache-airflow-providers-amazon are recommended to upgrade to version 9.38.0, which fixes the issue.

CVSS

NVD hasn't assigned a CVSS score to this CVE (common since the April 2026 policy change).

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
0.17 %
Percentile among all scored CVEs
6
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).

Media coverage

Specialised security media that have cited this CVE:

Affected technologies (1)

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

Apache — Apache-airflow-providers-amazonAI

CWEs

References

Show 3 references

Raw JSON (NVD)

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{
  "id": "CVE-2026-86467",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "security@apache.org",
      "affectedData": [
        {
          "vendor": "Apache Software Foundation",
          "product": "Apache Airflow Amazon provider",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "9.38.0",
              "versionType": "semver"
            }
          ],
          "packageURL": "pkg:pypi/apache-airflow-providers-amazon",
          "packageName": "apache-airflow-providers-amazon",
          "collectionURL": "https://pypi.python.org",
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-10-20T03:17:16.813",
  "references": [
    {
      "url": "https://github.com/apache/airflow/pull/73698",
      "source": "security@apache.org"
    },
    {
      "url": "https://lists.apache.org/thread/xr9d2jyk9qpglsmromt6vjl4s9jb5qn8",
      "source": "security@apache.org"
    },
    {
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-40948",
      "source": "security@apache.org"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "security@apache.org",
      "description": [
        {
          "lang": "en",
          "value": "CWE-352"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Apache Airflow Amazon provider: the AWS auth manager's SAML login flow does not bind the authentication response to the browser that began it. The login handler discards the AuthnRequest ID and the callback validates the assertion without requiring a matching InResponseTo, so an unauthenticated attacker who can cause a victim to load a page can complete a SAML login in the victim's browser using the attacker's own assertion, silently logging the victim into the attacker's Airflow account. Subsequent work the victim performs lands in a session the attacker controls.\n\nAffects deployments using the AWS auth manager with SAML authentication. The victim needs only to visit an attacker-controlled page; no Airflow account or credential is required of the attacker. This is the same login-CSRF class fixed in the Keycloak auth manager as CVE-2026-40948.\n\nUsers of apache-airflow-providers-amazon are recommended to upgrade to version 9.38.0, which fixes the issue."
    }
  ],
  "lastModified": "2026-10-20T19:35:38.940",
  "sourceIdentifier": "security@apache.org"
}