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GHSA-cjv4-7hp2-2x9h BIT-airflow-2026-68969 CVE-2026-68969 PYSEC-2026-3711

Apache Airflow bulk endpoints log Variable and Connection secrets in cleartext

Medium PyPI
Severity
6.5 / 10
Medium · CVSS 3.1
Exploit chance (EPSS)
0.36%
Chance of exploitation in the next 30 days. Higher than 29.57% of scored vulnerabilities.
Known exploited
No
Not in CISA's catalog
Weakness
CWE-532 Insertion of Sensitive Information into Log File
Fix
3.3.1
Upgrade apache-airflow to this version or later

Description

Apache Airflow wrote Variable values and Connection extra contents to the audit log in cleartext when they were submitted through the bulk endpoints (PATCH /api/v2/variables and PATCH /api/v2/connections). The audit-log masking recognised only top-level request fields, and a bulk request nests its entities two levels below, so no masking was applied to them. Any authenticated user with audit-log read access -- who need not hold Variables or Connections read at all -- could recover those secrets verbatim, and the Connection extra copy is stored unencrypted in the log while the connection table encrypts it. The Airflow UI's Import Variables action posts to this endpoint, so an ordinary operator import wrote every secret in the file to the log. This is a different code path from CVE-2026-50204: that fix shipped in 3.3.0 and covers the single-entity endpoints only, so deployments that upgraded in response to that advisory remain affected and must upgrade again. Users are advised to upgrade to apache-airflow 3.3.1 or later.

Affected versions

PyPI

PackageVulnerableFixed in
apache-airflow
< 3.3.1
3.3.1

How to fix

Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.

apache-airflow PyPI → 3.3.1

pip
pip install --upgrade "apache-airflow>=3.3.1"
poetry
poetry add "apache-airflow>=3.3.1"
uv
uv add "apache-airflow>=3.3.1"

Severity breakdown

CVSS 3.1 6.5

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Weakness

CWE-532: Insertion of Sensitive Information into Log File

The product writes sensitive information to a log file.

How to prevent it
  • Architecture and Design, Implementation: Consider seriously the sensitivity of the information written into log files. Do not write secrets into the log files.
  • Distribution: Remove debug log files before deploying the application into production.
  • Operation: Protect log files against unauthorized read/write.
  • Implementation: Adjust configurations appropriately when software is transitioned from a debug state to production.

References

Advisories

Packages

Other links

Timeline

  1. Published
  2. Last updated by the source
  3. Latest EPSS score
AdvisorySeverityWhy it's related
CVE-2020-13927
Authentication bypass in Apache Airflow
Critical Known exploited Also affects apache-airflow
CVE-2020-11978
Remote code execution (RCE) in Apache Airflow
High Known exploited Also affects apache-airflow
PYSEC-2026-3990
Apache Airflow: the Core API logout endpoint revokes only a session token presented as the _token cookie.
Critical Also affects apache-airflow
PYSEC-2026-3989
When a request to the Airflow core API carries both a session cookie and an explicit `Authorization: Bearer` token, Airflow resolves the caller from the cookie…
Medium Also affects apache-airflow
PYSEC-2026-3988
Apache Airflow's `/assets/events` API returned asset events for every Dag in the deployment, with no filter restricting them to the Dags the caller is…
Medium Also affects apache-airflow
GHSA-5247-m8w9-2v4m
Apache Airflow missing team context permits cross-team Dag actions and XCom reads
Medium Also affects apache-airflow
GHSA-f3c2-j7g8-vpp8
Apache Airflow Task SDK fails to mask list-shaped JSON Variables
Medium Also affects apache-airflow
GHSA-j4jc-cq9h-xrhr
Apache Airflow Backfill API parser discrepancy permits cross-DAG authorization bypass
High Also affects apache-airflow
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