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CVE-2026-82355— Apache Airflow: Session cookie silently overrides explicit Authorization bearer header, enabling session fixation

Quick assessment

Affected
Apache Software Foundation Apache Airflow
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.

When a request to the Airflow core API carries both a session cookie and an explicit token, Airflow resolves the caller from the cookie and ignores the bearer token, inverting the intended precedence of bearer over cookie. The request then executes -- and is r

EPSS 0.27% · P19

Affected Version Matrix 1

VendorProduct Version RangeStatus
Apache Software Foundation Apache Airflow 3.3.0< 3.3.2 affected
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I. Basic Information for CVE-2026-82355

Vulnerability Information

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Vulnerability Title
Apache Airflow: Session cookie silently overrides explicit Authorization bearer header, enabling session fixation
Source: CVE Program / CVE List V5
Vulnerability Description
When a request to the Airflow core API carries both a session cookie and an explicit `Authorization: Bearer` token, Airflow resolves the caller from the cookie and ignores the bearer token, inverting the intended precedence of bearer over cookie. The request then executes -- and is recorded in the audit log -- as the cookie's principal rather than the identity the client explicitly presented. Only Apache Airflow 3.3.0 and 3.3.1 are affected. Earlier releases do not contain the code path that caches the cookie-derived user, and are not vulnerable. Exploiting this requires an attacker to first place a valid session cookie of their own into the victim's browser or client: for example by cookie tossing from a sibling subdomain, through cross-site scripting in a separate application sharing a parent domain, or via a shared workstation. Deployments that host the Airflow UI on a domain shared with other applications are therefore the most exposed; a deployment on a dedicated domain with no co-hosted applications is not reachable this way. The consequence is principal confusion and misattributed audit records rather than a direct privilege escalation. Users of 3.3.0 or 3.3.1 should upgrade to Apache Airflow 3.3.2 or later, which resolves the caller from the explicitly supplied credential whenever one is present.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
会话固定
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Airflow 3.3.0 ~ 3.3.2 -

II. Public POCs for CVE-2026-82355

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III. Intelligence Information for CVE-2026-82355

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Patches & Fixes for CVE-2026-82355 (2)

Mailing List Discussions for CVE-2026-82355 (1)

Same Patch Batch · Apache Software Foundation · 2026-09-21 · 10 CVEs total

CVE-2026-94301 9.8 CRITICAL Apache MINA: CVE-2026-47065 resolveProxyClass fix missing from 2.0.X and 2.1.X branches (2
CVE-2026-47321 7.5 HIGH Apache MINA: Unbounded Decompression Amplification DoS in Zlib.inflate
CVE-2026-91863 Apache Neethi: Uncontrolled recursion while parsing crafted WS-Policy documents allows den
CVE-2026-91864 Apache Neethi: Crafted WS-Policy documents bypass element/attribute limits causing memory
CVE-2026-91865 Apache Neethi: Crafted policy references cause exponential expansion during normalization
CVE-2026-91866 Apache Neethi: Crafted policies cause unbounded work during intersection leading to denial
CVE-2026-91867 Apache Neethi: Remote policy fetch lacks a total timeout, allowing a slow server to hang t
CVE-2026-75158 Apache Airflow: Assets events API returns asset events for every Dag with no per-Dag autho
CVE-2026-86473 Apache Airflow: Logout ignores a presented Authorization bearer token, leaving it revocabl

IV. Related Vulnerabilities

Same product: Apache Airflow
Same vendor: Apache Software Foundation
Same weakness: CWE-384

V. Comments for CVE-2026-82355

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