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PatchSiren cyber security CVE debrief

CVE-2020-13927 Apache CVE debrief

CVE-2020-13927 affects Apache Airflow’s Experimental API and is identified by CISA as a known exploited vulnerability. The issue is described as an authentication bypass, which means an attacker could potentially access the API without proper authentication. Because it is listed in the KEV catalog, defenders should treat it as a priority remediation item and apply vendor-recommended updates as soon as possible.

Vendor
Apache
Product
Airflow's Experimental API
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2022-01-18
Original CVE updated
2022-01-18
Advisory published
2022-01-18
Advisory updated
2022-01-18

Who should care

Apache Airflow operators, especially teams running deployments that expose the Experimental API, should treat this as urgent. Security teams responsible for internet-facing or broadly reachable Airflow instances should prioritize review and remediation.

Technical summary

The supplied corpus identifies this issue as an authentication bypass in Apache Airflow’s Experimental API. CISA lists it in the Known Exploited Vulnerabilities catalog, which indicates active exploitation concern. The corpus does not include affected version ranges or patch details, so remediation should follow official vendor guidance and the CISA KEV required action to apply updates per vendor instructions.

Defensive priority

High. CISA has listed this CVE in the Known Exploited Vulnerabilities catalog, which elevates operational urgency regardless of missing CVSS details in the supplied corpus.

Recommended defensive actions

  • Apply updates per vendor instructions for your Apache Airflow deployment.
  • Inventory Airflow instances and confirm whether the Experimental API is enabled or exposed.
  • Restrict network access to Airflow management and API endpoints, especially on internet-facing systems.
  • Review authentication and access-control configuration around the Experimental API.
  • Monitor logs for unusual API access attempts and investigate unexpected administrative activity.

Evidence notes

All claims in this debrief are limited to the supplied corpus and official links. The source item metadata and title identify the vulnerability as an Apache Airflow Experimental API authentication bypass. CISA KEV metadata confirms it is a known exploited vulnerability and gives the required action: apply updates per vendor instructions. No version range, exploit chain details, or patch advisory content were provided in the corpus, so those specifics are intentionally omitted.

Sources and references

Verified primary and authoritative sources

  • CVE-2020-13927 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2020-13927

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2020-13927 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2020-13927

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.