CVE-2026-59244: Apache Airflow · Cleartext Storage of Sensitive Information
Affects Apache AirflowSource CVE Database V5
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
Thin evidence
One scorer or none| CISA-ADP | CVSS 3.1 | 6.5 |
|---|
- 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:NExploitation evidence
Disclosed: evidence found.
CVE published 12 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| Apache Airflowapache-airflow | Affected
| Fixed in
|
| Apache Airflowapache-airflow-core | Affected
| Fixed in
|
PyPIapache-airflowpkg:pypi/apache-airflowOther threats | Affected
| Fixed in
|
PyPIapache-airflowpkg:pypi/apache-airflowOther threats | Affected
| Fixed in
|
PyPIapache-airflow-corepkg:pypi/apache-airflow-coreOther threats | Affected
| Fixed in
|
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.