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CVE-2026-76186— Apache Airflow Keycloak provider: Keycloak token cookies not bound to Airflow session identity

Quick assessment

Affected
Apache Software Foundation Apache Airflow Keycloak provider
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache Airflow Keycloak provider: from Airflow 3.3 the Keycloak auth manager takes a user's identity from the signed Airflow session token but takes the Keycloak access and refresh tokens used for every authorization decision from separate, unauthenticated coo

AI Predicted 7.4 Difficulty: Moderate
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I. Basic Information for CVE-2026-76186

Vulnerability Information

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Vulnerability Title
Apache Airflow Keycloak provider: Keycloak token cookies not bound to Airflow session identity
Source: CVE Program / CVE List V5
Vulnerability Description
Apache Airflow Keycloak provider: from Airflow 3.3 the Keycloak auth manager takes a user's identity from the signed Airflow session token but takes the Keycloak access and refresh tokens used for every authorization decision from separate, unauthenticated cookies, and never checks that the two describe the same subject. A user who holds any valid Airflow login of their own, together with another subject's Keycloak access or refresh token obtained out of band, can pair the two: Airflow then authorizes requests with the foreign token's privileges while the session identity, audit log and cache keys continue to name the attacker's own account. The refresh path re-issues an Airflow session token for the original identity carrying the foreign tokens, so the mismatched pairing survives across sessions. Affects deployments running Airflow 3.3 or later with the Keycloak auth manager. Earlier versions carried the Keycloak tokens inside the signed session token, so the binding existed and was lost when they moved into separate cookies. Users of apache-airflow-providers-keycloak are recommended to upgrade to version 0.10.0 or later, which binds the cookie-supplied tokens to the session identity.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
在信任Cookie未进行验证与完整性检查
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Airflow Keycloak provider 0 ~ 0.10.0 -

II. Public POCs for CVE-2026-76186

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III. Intelligence Information for CVE-2026-76186

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Patches & Fixes for CVE-2026-76186 (1)

Mailing List Discussions for CVE-2026-76186 (1)

Same Patch Batch · Apache Software Foundation · 2026-09-16 · 13 CVEs total

CVE-2026-84501 Apache ZooKeeper: Operational log forgery via newline injection in EnsembleAuthenticationP
CVE-2026-84439 Apache ZooKeeper: Audit log injection via unsanitized output from multiple sources
CVE-2026-79993 Apache ZooKeeper: Missing ACL check on deleteContainer opcode allows unauthorized deletion
CVE-2026-59969 Apache ZooKeeper: Improper validation of certificate with host mismatch in FIPS mode
CVE-2026-59739 Apache ZooKeeper: Information disclosure via SetWatches reconnect replay
CVE-2026-86466 Apache Airflow FAB provider: FAB Authentik provider: id_token issuer/audience not validate
CVE-2026-76187 Apache Airflow Keycloak provider: Any realm client's credentials mint an Airflow session J
CVE-2026-82310 Apache Airflow FAB provider: FAB auth manager: deactivated users retain and renew Core API
CVE-2026-86792 Apache Airflow Apache Kafka provider: Connection-editor remote code execution on the Sched
CVE-2026-86462 Apache Airflow FAB provider: FAB Admin password PATCH does not invalidate database-backed
CVE-2026-82311 Apache Airflow FAB provider: FAB password reset never invalidates sessions: string/int _us
CVE-2026-86465 Apache Airflow Akeyless provider: Akeyless secrets backend: team-scope guard bypass via us

IV. Related Vulnerabilities

Same product: Apache Airflow Keycloak provider
Same vendor: Apache Software Foundation
Same weakness: CWE-565

V. Comments for CVE-2026-76186

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