CVE-2026-33858

Name: CVE-2026-33858
Creator: NVD / NIST
Published: 2026-04-13T15:17:33.343+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.59%

Last modified Jun 17, 2026

CVE-2026-33858 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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 trusted, severity of this issue is Low. Users are recommended to upgrade to Apache Airflow 3.2.0, which resolves this issue.. EPSS estimates a 0.59% chance of exploitation in the next 30 days.

Description

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 trusted, severity of this issue is Low. Users are recommended to upgrade to Apache Airflow 3.2.0, which resolves this issue.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.59%

43.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-502

Affected Software

Vendor	Product	Versions
Apache	Airflow	>= 3.1.8, < 3.2.0

References

https://github.com/apache/airflow/pull/64148Issue Tracking
https://lists.apache.org/thread/1npt3o2x81s0gw9tmfcv4n7p1z9hdmy0Mailing List, Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/04/13/7Mailing List, Third Party Advisory

Timeline

Published: Apr 13, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-33858?

How severe is CVE-2026-33858?

CVE-2026-33858 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.59% probability of exploitation in the next 30 days.

How do I fix CVE-2026-33858?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-33858?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST