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CVE-2026-68968— Apache Airflow: Authorization bypass in the Backfill API through conflicting interpretations of the backfill id

Quick assessment

Affected
Apache Software Foundation Apache Airflow
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache Airflow是美国Apache基金会开源的一套具有创建、管理和监控工作流程功能的开源平台。 Apache Airflow 3.3.1之前版本存在处理逻辑错误漏洞，该漏洞源于Backfill API的backfill_id路径段解析时授权依赖与路由处理器解析不一致，可能导致具有任意单个Dag编辑权限的已认证用户读取、暂停和取消其他Dag的回填操作。

AI Predicted 8.8 Difficulty: Easy EPSS 0.75% · P53

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 1

VendorProduct Version RangeStatus
Apache Software Foundation Apache Airflow < 3.3.1 affected
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I. Basic Information for CVE-2026-68968

Vulnerability Information
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Vulnerability Title
Apache Airflow: Authorization bypass in the Backfill API through conflicting interpretations of the backfill id
Source: CVE Program / CVE List V5
Vulnerability Description
Apache Airflow's Backfill API authorized a request against a Dag id supplied by the caller whenever the `backfill_id` path segment failed to parse. The authorization dependency parsed it with `int()` while the route handler parsed it as pydantic's `NonNegativeInt`, which accepts values `int()` rejects (`1.0` coerces to `1`); FastAPI resolves dependencies before endpoint validation, so the two acted on different Dags. An authenticated user holding edit permission on any single Dag could therefore read, pause and cancel backfills belonging to any other Dag, including moving another Dag's queued runs to `failed`. No non-default configuration is required and backfill ids are sequential, so finding a target is trivial. Users are advised to upgrade to apache-airflow 3.3.1 or later, which parses the backfill id with the same type the routes declare.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
解释冲突
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Airflow 处理逻辑错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Airflow是美国Apache基金会开源的一套具有创建、管理和监控工作流程功能的开源平台。 Apache Airflow 3.3.1之前版本存在处理逻辑错误漏洞，该漏洞源于Backfill API的backfill_id路径段解析时授权依赖与路由处理器解析不一致，可能导致具有任意单个Dag编辑权限的已认证用户读取、暂停和取消其他Dag的回填操作。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Airflow 0 ~ 3.3.1 -

II. Public POCs for CVE-2026-68968

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III. Intelligence Information for CVE-2026-68968

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Patches & Fixes for CVE-2026-68968 (1)

Mailing List Discussions for CVE-2026-68968 (1)

Same Patch Batch · Apache Software Foundation · 2026-08-12 · 17 CVEs total

CVE-2026-68868 Apache Airflow Google provider: google Secret Manager backend: team scope is never applied
CVE-2026-68076 Apache Airflow: Connections test API: team-scope guard bypass resolves another team's envi
CVE-2026-68971 Apache Airflow: Cross-team authorization bypass in the asset materialization and dag-run r
CVE-2026-68970 Apache Airflow: Values of a list-shaped Variable are not masked in task logs and the Rende
CVE-2026-68969 Apache Airflow: Bulk Variable and Connection endpoints record secret values in the audit l
CVE-2026-65017 Apache Airflow: Config API: team-scoped Celery broker secret disclosed to a Viewer (multi-
CVE-2026-67587 Apache Airflow: DAG-author remote code execution on the Scheduler via a Serde `Callback` d
CVE-2026-67260 Apache Airflow: DAG-author remote code execution on the Scheduler via awaiting_input next_
CVE-2026-54183 Apache Airflow: Airflow Variables were not masked in the UI for authenticated users
CVE-2026-59242 Apache Airflow: Arbitrary airflow.* class instantiation on the API server via the XCom des
CVE-2026-58076 Apache Airflow: Unguarded import_string() of airflow_exc_ser / base_exc_ser exception node
CVE-2026-59244 Apache Airflow: Secrets masker: `var.json` Variable values not masked in the Rendered Temp
CVE-2026-73240 Apache Allura: Git command injection
CVE-2026-73239 Apache Allura: Missing permission checks IDOR
CVE-2026-73238 Apache Allura: XSS in code display
CVE-2026-73237 Apache Allura: XSS in markdown pipeline

IV. Related Vulnerabilities

Same product: Apache Airflow
Same vendor: Apache Software Foundation
Same weakness: CWE-436

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