How severe is CVE-2018-20245?

CVE-2018-20245 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2018-20245 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-20245?

CVE-2018-20245 affects Apache Airflow. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-20245?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-20245 published?

CVE-2018-20245 was published on 2019-01-23 and last updated on 2026-06-17.

CVE-2018-20245

CVE-2018-20245 is a high-severity vulnerability in Apache Airflow with a CVSS 3.x base score of 7.5. 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-295.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-295
Affected product: Apache Airflow
Published: 2019-01-23
Last modified: 2026-06-17

Description

The LDAP auth backend (airflow.contrib.auth.backends.ldap_auth) prior to Apache Airflow 1.10.1 was misconfigured and contained improper checking of exceptions which disabled server certificate checking.

Frequently asked questions

What is CVE-2018-20245?: The LDAP auth backend (airflow.contrib.auth.backends.ldap_auth) prior to Apache Airflow 1.10.1 was misconfigured and contained improper checking of exceptions which disabled server certificate checking.
How severe is CVE-2018-20245?: CVE-2018-20245 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2018-20245 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-20245?: CVE-2018-20245 affects Apache Airflow. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-20245?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-20245 published?: CVE-2018-20245 was published on 2019-01-23 and last updated on 2026-06-17.

References

https://lists.apache.org/thread.html/b549c7573b342a6e457e5a3225c33054244343927bbfb2a4cdc4cf73%40%3Cdev.airflow.apache.org%3E

Affected products (1)

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

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