What’s Vulnerable › Vulnerabilities

CVE-2026-28779: Apache Airflow: Path of session token in cookie does not consider base_url - session hijacking via co-hosted applications

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-17 · updated 2026-06-17
• Weakness: CWE-668

Description

Apache Airflow versions 3.1.0 through 3.1.7 session token (_token) in cookies is set to path=/ regardless of the configured [webserver] base_url or [api] base_url. This allows any application co-hosted under the same domain to capture valid Airflow session tokens from HTTP request headers, allowing full session takeover without attacking Airflow itself. Users are recommended to upgrade to Apache Airflow 3.1.8 or later, which resolves this issue.

Affected products

• Apache Airflow: from 3.0.0 before 3.1.8 — fixed in 3.1.8

How to fix

Upgrade to a fixed version: Apache Airflow 3.1.8. Check the vendor advisory for mitigations.

References

• https://github.com/apache/airflow/pull/62771
• https://lists.apache.org/thread/r4n5znb8mcq14wo9v8ndml36nxlksdqb
• http://www.openwall.com/lists/oss-security/2026/03/17/3

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