Apache Airflow is widely used; this vulnerability enables cross-session privilege escalation in workflow infrastructure and can impact orgs' data pipelines and operations.
CVE-2026-76186
Airflow Keycloak token mismatch enables cross-session privilege escalation.
Is CVE-2026-76186 being exploited?
Not confirmed. CVE-2026-76186 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 0.81% probability of exploitation in the next 30 days.
How severe is CVE-2026-76186?
CVE-2026-76186 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-2026-76186?
Yes. A fix has been recorded for CVE-2026-76186. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-76186 affect?
CVE-2026-76186 affects Apache Airflow 3.3+ with Keycloak auth manager, apache-airflow-providers-keycloak < 0.10.0. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-76186?
Upgrade provider to >=0.10.0; revoke/rotate sessions and Keycloak tokens immediately.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Attacker with a valid Airflow login plus a stolen Keycloak token can act with another user's privileges and persist across sessions.
Immediate action required
- affected< 0.10.0
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 17 Sept 2026 (SSVC 2.0.3).
timeline
- 16 Sept 2026Published
- 17 Sept 2026CISA SSVC assessment: exploitation none · 1 day later
- 17 Sept 2026CVE record last updated · same day later
- 18 Sept 2026Analysed by vulneraibility.com · 1 day later
- Advisorylists.apache.org /thread/[email protected]
- Advisorylists.apache.org /thread/5cqh5ojl3718ogb0q1dcd9vdr47z7gp3
- Patchgithub.com /apache/airflow/pull/72207
- Linkopenwall.com /lists/oss-security/2026/09/15/8
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
- Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.