Information Disclosure in apache-airflow (CVE-2026-48891)
Summary
Vulnerability in apache-airflow (CVE-2026-48891). Risk of unauthorized operations or information disclosure. Exploitable via dep.source. Mitigation: upgrade to 3.3.0 or later.
Original description
The description as published by the source.
A bug in Apache Airflow's /ui/dependencies scheduling graph endpoint applied the caller's readable-Dag filter to the top-level serialized Dag key but still emitted referenced Dag IDs through the dep.source and dep.target fields of trigger / sensor dependency entries. An authenticated UI user with read permission on some Dags could enumerate the identifiers of other Dags they were not authorized to read by inspecting the dependency graph for trigger / sensor references. Affects deployments that rely on per-Dag read scoping to keep Dag identifiers private across teams. This is a residual gap in the fix for CVE-2026-28563, which filtered the top-level Dag key but did not propagate the filter into the trigger / sensor dep-source / dep-target fields. Users who already upgraded for CVE-2026-28563 should additionally upgrade to apache-airflow 3.3.0 or later to cover the residual trigger / sensor dependency leak.
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-48891 has been found in apache-airflow.
Attackers can target a specific entry point like dep.source over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 4.3/10.
What to do: upgrade apache-airflow to 3.3.0 or later.
If unsure, ask your IT team or search "apache-airflow CVE-2026-48891" on the vendor's site.
CVE-2026-48891 (apache-airflow) — CWE-200 / CVSS v3 4.3
Attack vector: remote (network-reachable) / no user interaction
Attack surface: dep.source / dep.target
Patched: 3.3.0 — 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.
Information disclosure (CWE-200) exists in apache-airflow. Attackers reach the vulnerable code path via dep.source.
Check the vendor advisory for the affected versions of apache-airflow. Attack surface: dep.source / dep.target.
Severity: Medium (CVSS 4.3/10). Risk of unauthorized operations or information disclosure.
Update to 3.3.0.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'apache-airflow' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'apache-airflow' . | 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を grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade apache-airflow to 3.3.0ステージング環境で 3.3.0 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を含めること。
-
3Post-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。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory lists.apache.org
- advisory cve.org
- package github.com
- report github.com
- web nvd.nist.gov
- web github.com
- web github.com
- web github.com