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VulnerabilityPublished

CVE-2026-43826: Apache Airflow Providers OpenSearch · Sensitive Data in Logs

Affects Apache Airflow Providers OpenSearchSource CVE Database V5

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Not known to be exploited · CVSS 6.5 Medium : upgrade to 1.9.1 when convenient.

Data as of 9 Nov 2026, 23:24 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 35% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.9.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 May 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 Providers OpenSearch and apache-airflow-providers-opensearch to 1.9.1.

Affected software

ProductAffectedFixed in
Apache Software FoundationApache Airflow Providers OpenSearchAffected
  • <1.9.1
Fixed in
  • 1.9.1
PyPIapache-airflow-providers-opensearchpkg:pypi/apache-airflow-providers-opensearchOther threatsAffected
  • <1.9.1
Fixed in
  • 1.9.1

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 Providers OpenSearch to version 1.9.1 or later where this issue is fixed. Additionally, configure backend credentials using a secret backend rather than embedding them in the host URL to reduce risk.

Description

Apache Airflow Providers OpenSearch versions prior to 1.9.1 log the full host URL including embedded credentials in task logs when configured with a host URL containing credentials. This allows any user with task-log read permission to access sensitive backend credentials. The vulnerability is classified as CWE-532 (Insertion of Sensitive Information into Log File). Users are advised to upgrade to version 1.9.1 or later and to configure backend credentials using a secret backend rather than embedding them in the host URL as a defense-in-depth measure.

References

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