Affects Apache Airflow, a widely used enterprise workflow orchestration tool; token persistence after logout can maintain access across orgs and is high-severity.
CVE-2026-86473
Airflow logout fails to revoke bearer tokens, leaving sessions valid after logout.
Is CVE-2026-86473 being exploited?
Not confirmed. CVE-2026-86473 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.75% probability of exploitation in the next 30 days.
How severe is CVE-2026-86473?
CVE-2026-86473 is rated Critical with a CVSS score of 9.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-86473?
Yes. A fix has been recorded for CVE-2026-86473. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-86473 affect?
CVE-2026-86473 affects Apache Airflow <= 3.3.1, API clients using Authorization bearer tokens, Self-hosted and managed Airflow deployments. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-86473?
Upgrade to apache-airflow 3.3.2+, revoke/rotate exposed tokens and audit token use
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Attackers with a copied bearer token retain victim access until token expiry (default 24h); no extra privileges required.
Immediate action required
- affected>= 3.0.0 and < 3.3.2
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.
cisa ssvc
- exploitation
- none
- automatable
- yes
- technical impact
- total
Assessed by CISA 21 Sept 2026 (SSVC 2.0.3).
timeline
- 21 Sept 2026Published
- 21 Sept 2026CISA SSVC assessment: exploitation none · same day later
- 21 Sept 2026CVE record last updated · same day later
- 23 Sept 2026Analysed by vulneraibility.com · 2 days later
also known as
- Advisorylists.apache.org /thread/k9z1p0q1ng8m68nlnv9d1fqzscrfm7vr
- Patchgithub.com /apache/airflow/pull/72649
- Linkopenwall.com /lists/oss-security/2026/09/21/5
sources
- CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
- NVD: CVSS and CPE data
- CISA Vulnrichment (ADP): SSVC decision points
- FIRST EPSS: exploit probability and percentile
- OSV: advisory aliases and downstream package versions
- Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.