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01 Record

CVE-2026-59242

Apache Airflow: Arbitrary airflow.* class instantiation on the API server via the XCom deserialize endpoint

MediumPUBLISHEDCNA: apache
CNA base score5.4 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

02 Description

Apache Airflow: Arbitrary airflow.* class instantiation on the API server via the XCom deserialize endpoint

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.52% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 44.4% of scored records. A rank, not a probability.
NVD base score
5.4 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
NVD analysis status
Analyzed. NVD last modified this record on 2026-10-24.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-08-12 15:35Z2 MO AGO
Last updated
2026-09-16 14:55Z1 MO AGO
Reserved
2026-07-04
Assigning CNA
apache
Record state
PUBLISHED
Severity
Medium (CVSS 5.4)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Weaknesses
  • CWE-502Deserialization of Untrusted DataBase
Data version
5.2
Document digest
b65f1f5f991295ff3d7d9e85e2af3fc2f1068a6c33622095c64a64e574022ad6

05 Affected products

VendorProductVersionsPlatforms
Apache Software FoundationApache Airflow0 to < 3.3.1—

06 References