Apache Airflow Providers Elasticsearch: Elasticsearch task-log handler leaks credentials embedded in the host URL
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-532.
Summary
The Elasticsearch logging provider, when configured with a `host` URL that embeds credentials (for example `https://user:[email protected]:9200`), wrote the full host URL — including the embedded credentials — into task logs. Any user with task-log read permission could harvest the backend credentials. Users are advised to upgrade to `apache-airflow-providers-elasticsearch` 6.5.3 or later and, as a defense-in-depth measure, configure the backend credentials via a secret backend rather than embedding them in the `[elasticsearch] host` URL.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Apache | Apache Airflow Providers Elasticsearch | before 6.5.3 | 6.5.3 | Patch available | CNA |
| — | apache-airflow-providers-elasticsearch (PyPI) | before 6.5.3 | 6.5.3 | Patch available | GHSA-g3jr-4jrm-jvqv |
- Apache Airflow Providers Elasticsearch VendorApache Affected before 6.5.3 Fixed in 6.5.3 Patch available CNA
- apache-airflow-providers-elasticsearch (PyPI) Vendor— Affected before 6.5.3 Fixed in 6.5.3 Patch available GHSA-g3jr-4jrm-jvqv
Remediation
- Fix · CNA Apache Airflow Providers Elasticsearch (Apache Software Foundation) Fixed in 6.5.3
- Fix · GHSA-g3jr-4jrm-jvqv apache-airflow-providers-elasticsearch (PyPI) Fixed in 6.5.3 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-41018
- 2026-10-03 Alias added: GHSA-g3jr-4jrm-jvqv
- 2026-10-05 EPSS moved to the 50th–90th percentile
- 2026-10-25 EPSS moved to the below the 50th percentile
References
Advisory 3
Sources
- CVE-2026-41018 · CVE Program
- CVE-2026-41018 · NVD
- FIRST EPSS
- GHSA-g3jr-4jrm-jvqv · GitHub Advisory Database · CC BY 4.0
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