CVE-2021-26697

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

4.55% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 90.8% of scored records. A rank, not a probability.

NVD base score

5.3 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

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.

Published

2021-02-17 14:15Z5 YR AGO

Last updated

2025-02-13 16:27Z1 YR AGO

Reserved

2021-02-04

Assigning CNA

apache

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-269Improper Privilege ManagementClass
• CWE-306Missing Authentication for Critical FunctionBase

Data version

5.1

Document digest

3f7225849317c8ced2f9b3fcdbbaa675a206bde686df3c8258a0cc07592775cb

• lists.apache.orghttps://lists.apache.org/thread.html/re21fec81baea7a6d73b0b5d31efd07cc02c61f832e297f65bb19b519%40%3Cusers.airflow.apache.org%3Ex_refsource_MISC
• www.openwall.com[oss-security] 20210217 CVE-2021-26697: Apache Airflow: Lineage API endpoint for Experimental API missed authentication checkhttp://www.openwall.com/lists/oss-security/2021/02/17/2mailing-listx_refsource_MLIST
• lists.apache.org[airflow-dev] 20210217 CVE-2021-26697: Apache Airflow: Lineage API endpoint for Experimental API missed authentication checkhttps://lists.apache.org/thread.html/re21fec81baea7a6d73b0b5d31efd07cc02c61f832e297f65bb19b519%40%3Cdev.airflow.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[announce] 20210217 CVE-2021-26697: Apache Airflow: Lineage API endpoint for Experimental API missed authentication checkhttps://lists.apache.org/thread.html/r36111262a59219a3e2704c71e97cf84937dae5ba7a1da99499e5d8f9%40%3Cannounce.apache.org%3Emailing-listx_refsource_MLIST