GHSA-q2hg-643c-gw8h · Severity: high · Ecosystem: pip — Apache Airflow: RCE by race condition in example_xcom dag
The example example_xcom that was included in airflow documentation implemented unsafe pattern of reading value from xcom in the way that could be exploited to allow UI user who had access to modify XComs to perform arbitrary execution of code on the worker. Since the UI users are already highly trusted, this is a Low severity vulnerability. It does not affect Airflow release - example_dags are not supposed to be enabled in production environment, however users following the example could replicate the bad pattern. Documentation of Airflow 3.2.0 contains version of the example with improved resiliance for that case. Users who followed that pattern are advised to adjust their implementations accordingly.
Conclusion & alert: CVE-2025-54550 is rated Moderate Risk (47.9/100): CVSS High severity, with low exploitation likelihood (EPSS 0.58%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.05% | 0.58% | +0.53% |
| 2 | 2026-04-18 | 0.03% | 0.05% | +0.03% |
| 3 | 2026-04-15 | — | 0.03% | — |
Full EPSS history (3 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.1 | 3.1 | HIGH |
|
2.8 | 5.2 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
GHSA-q2hg-643c-gw8h · Severity: high · Ecosystem: pip — Apache Airflow: RCE by race condition in example_xcom dag
| URL | Tags |
|---|---|
| https://github.com/apache/airflow/pull/63200 | Issue Tracking |
| https://lists.apache.org/thread/3mf4cfx070ofsnf9qy0s2v5gqb5sc2g1 | Mailing List Vendor Advisory |
| http://www.openwall.com/lists/oss-security/2026/04/15/1 | Mailing List Third Party Advisory |