Skip to main content
VulnerabilityPublished Updated

CVE-2026-59244: Apache Airflow · Cleartext Storage of Sensitive Information

Affects Apache AirflowSource CVE Database V5

0
Compare

Not known to be exploited · CVSS 6.5 Medium : upgrade to 3.0.0 when convenient.

Data as of 10 Nov 2026, 23:24 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CISA-ADPCVSS 3.16.5
EPSS
0.2% chance of exploitation in 30 days – higher than 13% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 3.0.0, 3.3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 12 Aug 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 10 Nov 2026.

What to do

Upgrade Apache Airflow and apache-airflow to 3.0.0; Apache Airflow and apache-airflow and apache-airflow-core to 3.3.1.

Affected software

ProductAffectedFixed in
Apache Airflowapache-airflowAffected
  • <3.0.0
Fixed in
  • 3.0.0
Apache Airflowapache-airflow-coreAffected
  • >=3.0.0 <3.3.1
Fixed in
  • 3.3.1
PyPIapache-airflowpkg:pypi/apache-airflowOther threatsAffected
  • <3.3.1
Fixed in
  • 3.3.1
PyPIapache-airflowpkg:pypi/apache-airflowOther threatsAffected
  • <3.0.0
Fixed in
  • 3.0.0
PyPIapache-airflow-corepkg:pypi/apache-airflow-coreOther threatsAffected
  • >=3.0.0 <3.3.1
Fixed in
  • 3.3.1

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

AI-suggested

Users should upgrade Apache Airflow to version 3.3.1 or later, where this issue is fixed by properly masking nested Variable values regardless of type. No other mitigation is indicated by the vendor advisory.

Description

Apache Airflow's secrets masker did not mask `var.json` Variable values whose value is a dict in the Rendered Templates UI — the dict value failed an `isinstance(str)` guard — so a secret stored as a JSON Variable and referenced in a template via `var.json` was displayed in cleartext to any user with access to that task's Rendered Templates view. Users are advised to upgrade to apache-airflow 3.3.1 or later, which masks nested Variable values regardless of type.

References

Community reviews

Loading reviews…