Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Apache Airflow versions before 3.3.1 are vulnerable in the Backfill API, where the authorization check and the route handler parsed the backfill id differently. An authenticated user with edit permission on any one Dag can read, pause and cancel backfills belonging to other Dags, including moving their queued runs to failed. Upgrade apache-airflow to 3.3.1 or later, which parses the backfill id consistently.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 7.5 | High | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | OSV |
- CISA KEV Not listed.
- EPSS 0.0042, the 36th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 12 Aug 2026, 15:27 UTC Confirmed by the CVE List
- 12 Aug 2026, 16:17 UTC Confirmed by NVD
- 31 Oct 2026, 14:08 UTC First seen by agentprime
- 31 Oct 2026, 14:08 UTC Confirmed by OSV