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CVE-2026-45426
Published:June 01, 2026
Updated:June 07, 2026
Exploitation requires the attacker to already be an authenticated Airflow worker holding a valid Log-server JWT issued for at least one Dag. Apache Airflow's Log server authorized JWT tokens against Dag IDs by applying Python's "str.lstrip()" to the requested path segment when verifying the JWT's "sub" claim. "str.lstrip()" strips any of a set of characters from the left (not a prefix), so a JWT issued for a Dag named e.g. "dag_a" would authorize log access to any other Dag whose name began with any subset of the characters "{d, a, g, _}" (e.g. "dag_attacker", "aaaa_target", "_dag_secret"). Such an authenticated worker could enumerate and read worker logs of other Dags whose names happened to share that character-class prefix, leaking task output and error traces beyond the documented per-Dag isolation boundary. Affects deployments relying on per-Dag log-access scoping (multi-team, shared-executor, shared-worker topologies). Users are advised to upgrade to "apache-airflow" 3.2.2 or later.
Affected Packages
apache-airflow (CONDA):
Affected version(s) >=2.0.1 <3.2.2
Fix Suggestion:
Update to version 3.2.2
apache-airflow (PYTHON):
Affected version(s) >=1.8.1 <3.2.2
Fix Suggestion:
Update to version 3.2.2
Additional Notes
The description of this vulnerability differs from MITRE.
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CVSS v4
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Incorrect Authorization
EPSS
Base Score:
0.05