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7.5 High

A bug in Apache Airflow's bulk Task Instances API (PATCH/DELETE /api/v2/dags/{dagid}/dagRuns/{dagrunid}/taskInstances) evaluated…

CVE-2026-41084

A bug in Apache Airflow's bulk Task Instances API (PATCH/DELETE /api/v2/dags/{dagid}/dagRuns/{dagrunid}/taskInstances) evaluated authorization against the dagid resolved from the URL path while operating on the dagid / dagrunid extracted from request-body entity fields. An authenticated UI/API user with edit permission on one Dag could mutate Task Instance state in any other Dag by keeping the authorized Dag's ID in the URL path and naming the target Dag's IDs in the request body entities. Affects deployments that rely on per-Dag edit-scope to keep Task Instance state isolated between teams. Users are advised to upgrade to apache-airflow 3.2.2 or later.

Assessment

CVSS
7.5 (v3.1)
Severity
High
EPSS
0.48% chance of exploitation in the next 30 days
Known exploited
Not listed in CISA KEV
Exploit availability
Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published
1 June 2026
Last updated
3 November 2026
Assigner
apache

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

At the source

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