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Back to active CVEs
High severityKnown ExploitedCVE-2020-13927GHSA-HHX9-P69V-CX2J

CISA ADP VulnrichmentCVE-2020-13927

Answer in brief

CVE-2020-13927 records a High severity vulnerability in CISA ADP Vulnrichment. The current sources mark it as known exploited. The current feed maps apache/airflow (generic), n/a/Apache Airflow (generic), apache-airflow (pypi). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 10, 2020Updated Oct 21, 2025Source checked Nov 4, 2026First seen by HOL May 24, 2026Material review Oct 21, 2025
Upstream Advisory

Key facts

Risk
High
Exploitation
Known exploited
Affected software
3 mapped packages or products
Fix availability
Available

Why this deserves its current priority

A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps apache/airflow (generic), n/a/Apache Airflow (generic), apache-airflow (pypi). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
apache/airflowgeneric>=0 <1.10.111.10.11
n/a/Apache AirflowgenericApache Airflow <1.10.111.10.11
apache-airflowpypi>=0 <1.10.111.10.11

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for apache/airflow, n/a/Apache Airflow, apache-airflow.
  2. 2Review the reported fix. Update apache/airflow to 1.10.11; n/a/Apache Airflow to 1.10.11; apache-airflow to 1.10.11 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Nov 10, 2020

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 21, 2025

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    May 24, 2026

  4. Added to CISA KEV

    Jan 18, 2022

    Evidence: source:kev:kev:kev:record

Sources and claim methodology

  • Source referencepacketstormsecurity.com
  • Source referencepacketstormsecurity.com
  • Source referencelists.apache.org
  • CISA Known Exploited Vulnerabilities catalogcisa.gov
  • GitHub security advisorygithub.com
Upstream source description

The previous default setting for Airflow's Experimental API was to allow all API requests without authentication, but this poses security risks to users who miss this fact. From Airflow 1.10.11 the default has been changed to deny all requests by default and is documented at https://airflow.apache.org/docs/1.10.11/security.html#api-authentication. Note this change fixes it for new installs but existing users need to change their config to default `[api]auth_backend = airflow.api.auth.backend.deny_all` as mentioned in the Updating Guide: https://github.com/apache/airflow/blob/1.10.11/UPDATING.md#experimental-api-will-deny-all-request-by-default

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-306, CWE-1188, CWE-1056
Source
CVE List V5
Source checked
Nov 4, 2026
References
5 linked sources
Open source record