Security readout for executives and security teams
Apache Airflow 2.0.0 could expose configuration data to authenticated lower-privileged users. Viewer or User roles could retrieve configurations, including sensitive information, even when configuration exposure was disabled. This is a business risk where Airflow stores credentials or operational secrets in configuration. Exposure is limited to Apache Airflow 2.0.0 deployments where authenticated Viewer or User accounts can reach the Stable API. Risk increases if Airflow configuration contains secrets, service credentials, connection details, or other data useful for privilege escalation. Treat this as a targeted remediation priority for any Airflow 2.0.0 environment. The main concern is sensitive configuration disclosure leading to privilege escalation, especially in production orchestration systems connected to cloud, database, or CI/CD credentials. Mitigation focus: Check Apache Airflow vendor guidance for the corrected release or official workaround.; Identify and prioritize any Apache Airflow 2.0.0 deployments.; Restrict Airflow web and API access to trusted users and networks..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-284: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-26559 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://lists.apache.org/thread.html/r3b3787700279ec361308cbefb7c2cce2acb26891a12ce864e4a13c8d%40%3Cusers.airflow.apache.org%3ECVE reference · x_refsource_MISC
- [announce] 20210217 CVE-2021-26559: Apache Airflow: CWE-284 Privilege Escalation AttackCVE reference · mailing-list, x_refsource_MLIST
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.