How severe is CVE-2023-36543?

CVE-2023-36543 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-36543 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-36543?

CVE-2023-36543 affects Apache Airflow. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-36543?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-36543 published?

CVE-2023-36543 was published on 2023-07-12 and last updated on 2026-06-17.

CVE-2023-36543

CVE-2023-36543 is a medium-severity vulnerability in Apache Airflow with a CVSS 3.x base score of 6.5. 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-1333.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1333
Affected product: Apache Airflow
Published: 2023-07-12
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is 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
How severe is CVE-2023-36543?: CVE-2023-36543 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-36543 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-36543?: CVE-2023-36543 affects Apache Airflow. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-36543?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-36543 published?: CVE-2023-36543 was published on 2023-07-12 and last updated on 2026-06-17.

References

Affected products (1)

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

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Threat intelligence

Threat-intel indicators referencing this CVE:

8.211.195.173 (ipv4-addr)