Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Apache Airflow (apache-airflow) versions 3.2.0 before 3.2.2 are affected. An authenticated user with XCom write permission on a Dag can use the XCom PATCH endpoint to write entries under reserved key names and submit payloads the triggerer deserializes as code, which can lead to remote code execution on the triggerer when the affected task next defers. Upgrade to apache-airflow 3.2.2 or later; users who already upgraded for CVE-2026-33858 still need this version.
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 |
|---|---|---|---|---|
| 8.8 | High | 3.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | OSV |
- CISA KEV Not listed.
- EPSS 0.0057, the 47th percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 1 Jun 2026, 07:49 UTC Confirmed by the CVE List
- 1 Jun 2026, 09:16 UTC Confirmed by NVD
- 31 Oct 2026, 14:43 UTC First seen by agentprime
- 31 Oct 2026, 14:43 UTC Confirmed by OSV