What is CVE-2023-36543?

CVE-2023-36543 is a medium-severity vulnerability in Apache Airflow, classified under Inefficient Regular Expression Complexity. CVSS score: 6.5/10. Published 2023-07-12.

How severe is CVE-2023-36543?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2023-36543 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Apache Airflow

CVE-2023-36543

Apache Airflow, versions before 2.6.3, has a vulnerability where an authenticated user can use crafted input to make the current request hang. It is recommended to upgrade to a version that is not affected

Vulnerability class: ReDoS (Regular Expression Denial of Service)

EPSS: 0.016 (72.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Apache Airflow
Apache Software Foundation Airflow — versions 0

Weakness classification (CWE)

CWE-1333 — Inefficient Regular Expression Complexity

Public proof-of-concept exploits

CP04042K/CVE

References

security@apache.org (Patch, patch)
security@apache.org (vendor-advisory, Patch, Mailing List, Vendor Advisory)

Frequently asked questions

What is CVE-2023-36543?: CVE-2023-36543 is a medium-severity vulnerability in Apache Airflow, classified under Inefficient Regular Expression Complexity. CVSS score: 6.5/10. Published 2023-07-12.
How severe is CVE-2023-36543?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2023-36543 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.