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VulnerabilityPublished Updated

CVE-2026-54183: Apache Airflow · Information Exposure

Affects Apache AirflowSource CVE Database V5

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Mentioned vulnerabilities

Not known to be exploited · CVSS 4.3 Medium : upgrade to 3.0.0 when convenient.

Data as of 9 Nov 2026, 23:24 UTC

CVSS 3.1 base score
4.3Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CISA-ADPCVSS 3.14.3
EPSS
0.4% chance of exploitation in 30 days – higher than 36% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 3.0.0, 3.3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 12 Aug 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 10 Nov 2026.

What to do

Upgrade Apache Airflow and apache-airflow to 3.0.0; Apache Airflow and apache-airflow and apache-airflow-core to 3.3.1.

Affected software

ProductAffectedFixed in
Apache Airflowapache-airflowAffected
  • <3.0.0
Fixed in
  • 3.0.0
Apache Airflowapache-airflow-coreAffected
  • >=3.0.0 <3.3.1
Fixed in
  • 3.3.1
PyPIapache-airflowpkg:pypi/apache-airflowOther threatsAffected
  • <3.3.1
Fixed in
  • 3.3.1
PyPIapache-airflowpkg:pypi/apache-airflowOther threatsAffected
  • <3.0.0
Fixed in
  • 3.0.0
PyPIapache-airflow-corepkg:pypi/apache-airflow-coreOther threatsAffected
  • >=3.0.0 <3.3.1
Fixed in
  • 3.3.1

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

AI-suggested

Upgrade Apache Airflow to version 3.3.1 or later, which addresses this residual masking issue. Deployments that applied the fix for CVE-2026-42358 should also upgrade to 3.3.1 or newer to fully resolve the problem. No other mitigation is required as the exposure does not grant additional access beyond existing authenticated user permissions.

Description

Apache Airflow's secrets masker hides values stored under sensitive key names when they are displayed in the UI. The masker's recursion-depth limit did not descend into values nested inside a list, tuple, or set beyond that limit, so an Airflow Variable holding such a deeply-nested value was shown unmasked in the Variables UI. The exposure is limited to the UI: any authenticated user who can see the Variable in the UI can already read its full value through the Variables REST API, so this does not disclose data the user could not otherwise obtain — the masking is a shoulder-surfing defense for the UI, not an access-control boundary. This is an incomplete-fix follow-up to CVE-2026-42358, whose fix made only the dictionary walk unbounded; lists, tuples, and sets beyond the depth limit remained unmasked in the UI. Deployments that applied the CVE-2026-42358 fix should also upgrade to address this residual case. Upgrade to apache-airflow 3.3.1 or later.

References

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