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CVE-2026-42358: A bug in Apache Airflow's Variable response masker caused nested-key redaction (triggered by secret-suffixed k

34
Routine
MEDIUM 6.5WATCHLISTUPGRADE

CVE-2026-42358 is a medium-severity flaw (CVSS 6.5) affecting airflow. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A bug in Apache Airflow's Variable response masker caused nested-key redaction (triggered by secret-suffixed key names like `password`, `token`, `secret`, `api_key`) to be bypassed when the JSON value's nesting depth exceeded the shared secrets masker's recursion limit: the masker returned the original nested item before checking the sensitive key name. An authenticated UI/API user with Variable read permission could harvest plaintext secret valu

Why this priority

  • On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score6.5 (Medium)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededLow
User interactionNone
EPSS exploit chance0.3% (top 73%)
CISA exploited listNo
WeaknessCWE-200
Published2026-06-01
Last modified2026-07-21
Publisher (CNA): Apache Software Foundation · Vendor: apache

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Last updated 2026-07-21 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

apache airflow UPGRADE
Affected: < 3.2.2
Fixed in: 3.2.2
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy airflow || rpm -q airflow || airflow --version
2. UPGRADE to 3.2.2 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade airflow
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade airflow
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-42358?

airflow: upgrade to 3.2.2. Exact commands for each OS are on this page.

Is CVE-2026-42358 being exploited?

CVE-2026-42358 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-42358 affect?

CVE-2026-42358 affects airflow. Severity is medium (CVSS 6.5). A bug in Apache Airflow's Variable response masker caused nested-key redaction (triggered by secret-suffixed key names like `password`, `token`, `secret`, `api_key`) to be bypassed when the JSON value's nesting depth exceeded the shared sec

How urgent is CVE-2026-42358?

Priority 34/100. On your watchlist

Software pages

Apache Airflow vulnerabilities

Related CVEs

References

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