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VulnerabilityPublished Updated

CVE-2026-82355: Apache Airflow · Session Fixation

Affects Apache AirflowSource CVE Database V5

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Not known to be exploited · CVSS 4.2 Medium : upgrade to 3.3.2 when convenient.

Data as of 5 Nov 2026, 11:40 UTC

CVSS 3.1 base score
4.2Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CISA-ADPCVSS 3.14.2
EPSS
0.7% chance of exploitation in 30 days – higher than 54% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 3.3.2
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 21 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Upgrade Apache Airflow and org.apache.airflow/airflow-core and apache-airflow-core to 3.3.2.

Affected software

ProductAffectedFixed in
Apache Airflowapache-airflow-coreAffected
  • >=3.3.0 <3.3.2
Fixed in
  • 3.3.2
Mavenorg.apache.airflow/airflow-corepkg:maven/org.apache.airflow/airflow-coreOther threatsAffected
  • >=3.3.0 <3.3.2
Fixed in
  • 3.3.2
PyPIapache-airflow-corepkg:pypi/apache-airflow-coreOther threatsAffected
  • >=3.3.0 <3.3.2
Fixed in
  • 3.3.2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Users running Apache Airflow versions 3.3.0 or 3.3.1 should upgrade to version 3.3.2 or later, where the issue is fixed by correctly prioritizing the explicitly supplied bearer token over session cookies. Deployments on dedicated domains without co-hosted applications are less exposed. No additional mitigations are specified by the vendor advisory.

Description

Apache Airflow versions 3.3.0 and 3.3.1 contain a session fixation vulnerability where the system prioritizes a session cookie over an explicit Authorization Bearer token. This causes the API to authenticate the user based on the cookie rather than the token, leading to principal confusion and inaccurate audit logs. Exploitation requires an attacker to place a valid session cookie in the victim's browser, which is more feasible in environments sharing domains with other applications. The issue is fixed in version 3.3.2.

References

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