CVE-2026-58076
CVE-2026-58076: 3 tracked advisory records across Apache. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Apache
3 advisories- Advisory severityHigh8.8
High [CVE-2026-33264 +1] Apache Airflow: Unguarded import_string of airflow_exc_ser / base_exc_ser exception nodes in BaseSerialization.deserialize enables DAG-author RCE on Scheduler / API Server
CVE-2026-58076Source published Source updated
This bulletin covers 2 CVEs. The products, versions, score and guidance below describe the bulletin; check its source for applicability to this specific CVE.
Apache Airflow's serialization layer reconstructed exception nodes by calling `import_string()` on a class name taken from the serialized blob and instantiating it with arguments from the same blob, with no restriction on what could be imported. An operator's `executor_config` reaches that branch, so a Dag author could place a value there that causes an arbitrary callable to be imported and invoked -- for example `subprocess.check_output`, or `builtins.eval` on the `builtins`-prefixed variant. The code runs in the **Scheduler**, which reconstructs serialized Dags in its normal loop with no request involved, and in the **API server**, on any authenticated read of the Dag such as `GET /api/v2/dags/{dag_id}/details`. Both are components the Airflow security model states must never execute…
- Affected products in this advisory
- Apache Airflow
- Source-reported affected versions
- Apache Airflow 3.0.0 before 3.3.1
- Source-reported fixed versions
- 3.3.1
- Mitigation guidance
- This is a **different sink from CVE-2026-33264**, which covered only the trigger branch of the same deserializer: deployments that upgraded in response to that advisory are still affected through the exception branch and must upgrade again.
- Users are advised to upgrade to apache-airflow 3.3.1 or later, which restricts the imported class to a subclass of `BaseException`.
- Advisory severityHigh7.3
High [CVE-2026-58076 +1] Apache Airflow: DAG-author remote code execution on the Scheduler via awaiting_input next_kwargs deserialization
CVE-2026-67260Source published Source updated
This bulletin covers 2 CVEs. The products, versions, score and guidance below describe the bulletin; check its source for applicability to this specific CVE.
Apache Airflow 3.3.0 moved human-in-the-loop tasks from the triggerer to a new `awaiting_input` task state swept by the scheduler. That sweep deserializes the task instance's `next_kwargs` without an allow-list, so a Dag author — who controls that value through the task execution API — can cause an arbitrary module import and object instantiation inside the scheduler process, or terminate the scheduler job. No non-default configuration is required: the sweep runs unconditionally every 15 seconds, and the default `allowed_deserialization_classes` setting does not cover this code path. Versions before 3.3.0 are not affected, because human-in-the-loop tasks deferred onto the triggerer instead. This is a different code path from CVE-2026-58076, which covers the same unguarded exception-node…
- Affected products in this advisory
- Apache Airflow
- Source-reported affected versions
- Apache Airflow 3.3.0 before 3.3.1
- Source-reported fixed versions
- 3.3.1
- Mitigation guidance
- This is a different code path from CVE-2026-58076, which covers the same unguarded exception-node deserialization reached elsewhere — deployments that applied that fix must upgrade for this issue as well.
- Users are advised to upgrade to apache-airflow 3.3.1 or later.
- Advisory severityHigh8.8
High [CVE-2026-58076 +2] Apache Airflow: DAG-author remote code execution on the Scheduler via a Serde `Callback` deserialization gadget
CVE-2026-67587Source published Source updated
This bulletin covers 3 CVEs. The products, versions, score and guidance below describe the bulletin; check its source for applicability to this specific CVE.
Apache Airflow's Task SDK rebuilt a `Callback` object from serialized data by re-running its constructor, which imports the module named by the stored callback path. Because `SyncCallback` is itself an Airflow class it passes the default `allowed_deserialization_classes` allow-list, so tightening that setting does not help. A Dag author — who controls a task instance's `next_kwargs` through the task execution API — can therefore cause an arbitrary module to be imported inside the scheduler process, when the scheduler's `awaiting_input` timeout sweep deserializes that value. No non-default configuration is required; the sweep runs unconditionally. Versions before 3.3.0 are not affected: the class existed, but the scheduler sweep that reaches it did not. This is a separate code path from…
- Affected products in this advisory
- Apache Airflow
- Source-reported affected versions
- Apache Airflow 3.3.0 before 3.3.1
- Source-reported fixed versions
- 3.3.1
- Mitigation guidance
- Users are advised to upgrade to apache-airflow 3.3.1 or later.
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