GHSA-mc4f-r875-v87w: apache-airflow (CVE-2026-33858)

Dag Authors, who normally should not be able to execute code in the webserver context could craft XCom payload causing the webserver to execute arbitrary code. Since Dag Authors are already highly ...

CVSS 8.8 HighEPSS 0.0060 · 49th percentile

Published by the GitHub Advisory Database at 13 Apr 2026, 15:17 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

Package	Ecosystem	Affected	Fixed in
apache-airflow	PyPI	>=3.1.8, <3.2.0	3.2.0

Identifiers

GHSA-mc4f-r875-v87w · BIT-airflow-2026-33858 · CVE-2026-33858 · PYSEC-2026-20

Weakness (CWE)

CWE-502

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Apache Airflow versions 3.1.8 up to but not including 3.2.0 are affected. A Dag Author, who is normally not allowed to run code in the webserver context, can craft an XCom payload that causes the webserver to execute arbitrary code. Users should upgrade to Apache Airflow 3.2.0.

Written 10 Nov 2026.

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 0.0060, the 49th percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

13 Apr 2026, 14:36 UTC Confirmed by the CVE List
13 Apr 2026, 15:17 UTC Confirmed by NVD

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.