CVE-2026-33858

highpriority · track · 0EPSS 0.006 · 48 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.59% (48th) EPSS

CVSS 8.8 · high

Is it mine?

6 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · osv · cert_bund

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 2.8 · impact 5.9

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · OSV

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-502USCWE-502US

affected products (6)

Products and version ranges known to be affected.

Apache Airflow <3.2.0all versionscert_bundDE
Apache Airflow< 3.2.0cert_bundDE
Apache Software Foundation Apache Airflow3.1.8 → 3.2.0enisa_euvdEU
apache airflow3.1.8 → 3.2.0nvdUScpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:*
Bitnami airflow3.1.8 → 3.2.0osvUSpkg:bitnami/airflow
PyPI apache-airflow3.1.8 → 3.2.0osvUSpkg:pypi/apache-airflow

advisories (4)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-1073Apache Airflow: Mehrere SchwachstellenDeutsch2026-04-13csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Apache Airflow ausnutzen, um beliebigen Programmcode auszuführen oder nicht näher spezifizierte Auswirkungen zu erreichen, wodurch möglicherweise Sicherheitsmaßnahmen umgangen werden.
GHSA-mc4f-r875-v87wApache Airflow: Unsafe Deserialization via Legacy Serialization Keys (__type/__var) Bypass in XCom API2026-04-13ghsa · osvUS
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.
BIT-airflow-2026-33858Apache Airflow: Unsafe Deserialization via Legacy Serialization Keys (__type/__var) Bypass in XCom API2026-04-16vendor · osvUS
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.
PYSEC-2026-202026-04-13vendor · osvUS
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.

also known as (7)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv cert_bund nvd NVD CVE.org MITRE

published 2026-04-13modified 2026-10-26

references (9)

External citations — patches, advisories, analysis.

scry

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