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CVE-2026-113504VulnerabilityPublished

Apache Airflow's secrets masker stopped descending into nested structures after five levels, so a secret registered

Source GCVE Database

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Authoritative record:CVE-2026-113504· High

Not known to be exploited : upgrade to 3.0.0 soon.

Data as of 9 Nov 2026, 13:33 UTC

Severity
High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in 3.0.0, 3.4.0

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 9 Nov 2026.

What to do

Upgrade Apache Airflow and apache-airflow to 3.0.0; Apache Airflow and apache-airflow-core to 3.4.0.

Affected software

ProductAffectedFixed in
Apache Airflowapache-airflowAffected
  • >=2.1.1 <3.0.0
Fixed in
  • 3.0.0
Apache Airflowapache-airflow-coreAffected
  • <3.4.0
Fixed in
  • 3.4.0
PyPIapache-airflowpkg:pypi/apache-airflowOther threatsAffected
  • >=2.1.1 <3.0.0
Fixed in
  • 3.0.0
PyPIapache-airflow-corepkg:pypi/apache-airflow-coreOther threatsAffected
  • <3.4.0
Fixed in
  • 3.4.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Users should upgrade to Apache Airflow version 3.4.0 or later, where this issue has been fixed. No other mitigation actions are specified.

Description

Apache Airflow's secrets masker failed to mask secrets nested deeper than five levels in data structures, causing sensitive information such as Connection passwords or Variable values to be exposed in task logs and rendered templates. This exposure allows users who can read these logs or templates but should not have access to the secrets to view them in cleartext. The issue is resolved in Apache Airflow version 3.4.0 and later.

References

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