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CVE-2026-43826
medium
CVSS 6.5
Vulnerability in apache-airflow-providers-opensearch (CVE-2026-43826)
Summary
vulnerability in apache-airflow-providers-opensearch (CVE-2026-43826). Confidential information can be exposed externally. Exploitable via ``host``. Mitigation: upgrade to `1.9.1` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-43826** has been found in apache-airflow-providers-opensearch.
Attackers can target a specific entry point like ``host`` over the network to misuse the product.
Confidential information can be exposed externally. CVSS score: 6.5/10.
What to do: upgrade apache-airflow-providers-opensearch to **1.9.1** or later.
If unsure, ask your IT team or search "apache-airflow-providers-opensearch CVE-2026-43826" on the vendor's site.
CVE-2026-43826 (apache-airflow-providers-opensearch) — CWE-532 / CVSS v3 6.5
Attack vector: remote (network-reachable) / no user interaction
Attack surface: `host`
Patched: `1.9.1` — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
❓ What is the problem
**A vulnerability** (CWE-532) exists in apache-airflow-providers-opensearch. Attackers reach the vulnerable code path via ``host`` without authentication.
📍 Affected scope
apache-airflow-providers-opensearch — . Attack surface: `host`.
🔥 Severity
Severity: Medium (CVSS 6.5/10). Confidential information can be exposed externally
🔧 How to fix
Update to **1.9.1**.
🛡️ Workaround
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'apache-airflow-providers-opensearch' .` against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response Actions (7 steps)
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'apache-airflow-providers-opensearch' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で `apache-airflow-providers-opensearch` を grep し、稼働しているサービス・バージョンを把握する。
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6Apply patch patch
Upgrade apache-airflow-providers-opensearch to 1.9.1ステージング環境で 1.9.1 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスと、Step 3 で見つけた異常検知の続報チェックを含めること。
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7Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番では Step 3 と同じログクエリでアラート再発が無いか継続監視。
Affected packages
pip
apache-airflow-providers-opensearch
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.1"}]}]
PyPI
apache-airflow-providers-opensearch
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.1"}]}]
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2026-43826
- advisory https://lists.apache.org/thread/bxsrqx1vwssovnwnrvgh9xcosptmf73y
- advisory https://github.com/advisories/GHSA-xccp-97wp-3gjg
- advisory http://www.openwall.com/lists/oss-security/2026/05/10/2
- patch https://github.com/apache/airflow/pull/65509
- web https://github.com/apache/airflow/commit/6a6b6ff409fb48c28bd63482828632a3c5a5bb93
- web https://github.com/apache/airflow
- web https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow-providers-opensearch/PYSEC-2026-23.yaml