Deserialization of Untrusted Data Affecting airflow-3-compat package, versions <3.2.0-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-MINIMOSLATEST-AIRFLOW3COMPAT-16087422
- published16 Apr 2026
- disclosed13 Apr 2026
Introduced: 13 Apr 2026
NewCVE-2026-33858 (opens in a new tab)How to fix?
Upgrade Minimos:latest airflow-3-compat to version 3.2.0-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream airflow-3-compat package and not the airflow-3-compat package as distributed by Minimos.
See How to fix? for Minimos:latest relevant fixed versions and status.
Dag Authors, who normally should not be able to execute code in the webserver context could craft XCom payload causing the webserver to execute arbitrary code. Since Dag Authors are already highly trusted, severity of this issue is Low.
Users are recommended to upgrade to Apache Airflow 3.2.0, which resolves this issue.
References
- https://www.cve.org/CVERecord?id=CVE-2026-33858
- https://github.com/advisories/GHSA-mc4f-r875-v87w
- https://osv.dev/vulnerability/MINI-97fw-3337-7rq4
- https://osv.dev/vulnerability/CVE-2026-33858
- https://github.com/apache/airflow/pull/64148
- https://lists.apache.org/thread/1npt3o2x81s0gw9tmfcv4n7p1z9hdmy0
- http://www.openwall.com/lists/oss-security/2026/04/13/7