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Advisory record · PYSEC-2026-3989

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, inverti...

CVSS 4.2 MediumEPSS 0.0073 · 54th percentile

Published by OSV at 21 Sept 2026, 15:17 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
apache-airflowPyPI<=3.3.0No fixed version yet
Identifiers
PYSEC-2026-3989 · BIT-airflow-2026-82355 · CVE-2026-82355
Weakness (CWE)
CWE-384
Tags
Published
21 Sept 2026
Updated
26 Sept 2026

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
4.2 Medium 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N OSV
  • CISA KEV Not listed.
  • EPSS 0.0073, the 54th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 21 Sept 2026, 14:32 UTC Confirmed by the CVE List
  2. 21 Sept 2026, 15:17 UTC Confirmed by NVD
  3. 31 Oct 2026, 14:09 UTC First seen by agentprime
  4. 31 Oct 2026, 14:09 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.