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CVE-2026-82311— Apache Airflow FAB provider: FAB password reset never invalidates sessions: string/int _user_id comparison is always false

Quick assessment

Affected
Apache Software Foundation Apache Airflow FAB 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 FAB provider: resetting a user's password does not delete that user's existing database-backed sessions, despite documented behaviour that it does. The cleanup compares the string identifier Flask-Login stores in the session against the user's i

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I. Basic Information for CVE-2026-82311

Vulnerability Information

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Vulnerability Title
Apache Airflow FAB provider: FAB password reset never invalidates sessions: string/int _user_id comparison is always false
Source: CVE Program / CVE List V5
Vulnerability Description
Apache Airflow FAB provider: resetting a user's password does not delete that user's existing database-backed sessions, despite documented behaviour that it does. The cleanup compares the string identifier Flask-Login stores in the session against the user's integer database identifier, so the comparison never matches and no session is removed. An attacker who already holds a copy of the victim's session cookie keeps access as that user after the password change, so the reset does not evict them. Affects deployments using the FAB auth manager with `[fab] session_backend=database`. The trigger is an administrator (or the user) running the supported password-reset command as a containment action after a session cookie has been compromised; the secure-cookie backend is out of scope, as it documents that it cannot centrally delete sessions. apache-airflow-providers-fab 3.9.0 also fixes CVE-2026-86462, a second, independent route to the same outcome via the Admin user-edit endpoint; a single upgrade closes both. Users of apache-airflow-providers-fab are recommended to upgrade to version 3.9.0 or later, which compares the identifiers consistently.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的会话过期机制
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Airflow FAB provider 2.4.2 ~ 3.9.0 -

II. Public POCs for CVE-2026-82311

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III. Intelligence Information for CVE-2026-82311

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Patches & Fixes for CVE-2026-82311 (1)

Mailing List Discussions for CVE-2026-82311 (1)

Other References for CVE-2026-82311 (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-2026-76186 Apache Airflow Keycloak provider: Keycloak token cookies not bound to Airflow session iden
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-2026-86465 Apache Airflow Akeyless provider: Akeyless secrets backend: team-scope guard bypass via us

IV. Related Vulnerabilities

Same product: Apache Airflow FAB provider
Same vendor: Apache Software Foundation
Same weakness: CWE-613

V. Comments for CVE-2026-82311

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