How severe is CVE-2026-25917?

CVE-2026-25917 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-25917 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-25917?

CVE-2026-25917 affects Apache Airflow. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-25917?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-25917 have an EU (EUVD) identifier?

Yes. CVE-2026-25917 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23658.

When was CVE-2026-25917 published?

CVE-2026-25917 was published on 2026-04-18 and last updated on 2026-06-17.

CVE-2026-25917

CVE-2026-25917 is a high-severity vulnerability in Apache Airflow with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-502.

Key facts

Severity: High (CVSS 3.x base score 7.2)
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-23658
Weakness: CWE-502
Affected product: Apache Airflow
Published: 2026-04-18
Last modified: 2026-06-17

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 fixes the issue.

Frequently asked questions

What is CVE-2026-25917?: 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 fixes the issue.
How severe is CVE-2026-25917?: CVE-2026-25917 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-25917 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-25917?: CVE-2026-25917 affects Apache Airflow. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-25917?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-25917 have an EU (EUVD) identifier?: Yes. CVE-2026-25917 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23658.
When was CVE-2026-25917 published?: CVE-2026-25917 was published on 2026-04-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:*

More vulnerabilities in Apache Airflow

CVE-2023-25754 — Critical (CVSS 9.8): Privilege Context Switching Error vulnerability in Apache Software Foundation Apache Airflow.This issue affects Apache…
CVE-2023-22884 — Critical (CVSS 9.8): Improper Neutralization of Special Elements used in a Command ('Command Injection') vulnerability in Apache Software…
CVE-2022-40189 — Critical (CVSS 9.8): Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in Apache…
CVE-2022-38649 — Critical (CVSS 9.8): Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in Apache…
CVE-2022-38054 — Critical (CVSS 9.8): In Apache Airflow versions 2.2.4 through 2.3.3, the `database` webserver session backend was susceptible to session…
CVE-2021-38540 — Critical (CVSS 9.8): The variable import endpoint was not protected by authentication in Airflow >=2.0.0, <2.1.3. This allowed…

All CVEs affecting Apache Airflow →

Other CWE-502 (Deserialization of Untrusted Data) vulnerabilities

CVE-2026-41104 — Critical (CVSS 10.0): Deserialization of untrusted data in Microsoft Planetary Computer Pro allows an unauthorized attacker to disclose…
CVE-2026-43633 — Critical (CVSS 10.0): HestiaCP versions 1.9.0 through 1.9.4 contain a deserialization vulnerability in the web terminal component caused by a…
CVE-2026-33819 — Critical (CVSS 10.0): Deserialization of untrusted data in Microsoft Bing allows an unauthorized attacker to execute code over a network.
CVE-2026-20131 — Critical (CVSS 10.0): A vulnerability in the web-based management interface of Cisco Secure Firewall Management Center (FMC) Software could…
CVE-2026-25632 — Critical (CVSS 10.0): EPyT-Flow is a Python package designed for the easy generation of hydraulic and water quality scenario data of water…
CVE-2025-14931 — Critical (CVSS 10.0): Hugging Face smolagents Remote Python Executor Deserialization of Untrusted Data Remote Code Execution Vulnerability.…

Browse all CWE-502 (Deserialization of Untrusted Data) vulnerabilities →