How severe is CVE-2021-45229?

CVE-2021-45229 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-45229 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-45229?

CVE-2021-45229 affects Apache Airflow. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-45229?

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

When was CVE-2021-45229 published?

CVE-2021-45229 was published on 2022-02-25 and last updated on 2026-06-17.

CVE-2021-45229

CVE-2021-45229 is a medium-severity vulnerability in Apache Airflow with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Apache Airflow
Published: 2022-02-25
Last modified: 2026-06-17

Description

It was discovered that the "Trigger DAG with config" screen was susceptible to XSS attacks via the `origin` query argument. This issue affects Apache Airflow versions 2.2.3 and below.

Frequently asked questions

What is CVE-2021-45229?: It was discovered that the "Trigger DAG with config" screen was susceptible to XSS attacks via the `origin` query argument. This issue affects Apache Airflow versions 2.2.3 and below.
How severe is CVE-2021-45229?: CVE-2021-45229 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-45229 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-45229?: CVE-2021-45229 affects Apache Airflow. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-45229?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-45229 published?: CVE-2021-45229 was published on 2022-02-25 and last updated on 2026-06-17.

References

https://lists.apache.org/thread/phx76cgtmhwwdy780rvwhobx8qoy4bnk

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)
8.212.165.164 (ipv4-addr)