CVE-2026-43826: The OpenSearch logging provider, when configured with a `host` URL that embeds credentials (for example `https

Q: How do I fix CVE-2026-43826?

apache-airflow-providers-opensearch: upgrade to 1.9.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-43826 being exploited?

CVE-2026-43826 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-43826 affect?

CVE-2026-43826 affects apache-airflow-providers-opensearch. Severity is medium (CVSS 6.5). The OpenSearch logging provider, when configured with a `host` URL that embeds credentials (for example `https://user:password@server.example.com:9200`), wrote the full host URL — including the embedded credentials — into task logs. Any use

Q: How urgent is CVE-2026-43826?

Priority 37/100. On your watchlist

Routine

MEDIUM 6.5WATCHLISTUPGRADE

CVE-2026-43826 is a medium-severity flaw (CVSS 6.5) affecting apache-airflow-providers-opensearch. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The OpenSearch logging provider, when configured with a `host` URL that embeds credentials (for example `https://user:password@server.example.com:9200`), wrote the full host URL — including the embedded credentials — into task logs. Any user with task-log read permission could harvest the backend credentials. Users are advised to upgrade to `apache-airflow-providers-opensearch` 1.9.1 or later and, as a defense-in-depth measure, configure the back

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 65%)
CISA exploited list	No
Weakness	CWE-532
Published	2026-05-11
Last modified	2026-10-26

Publisher (CNA): Apache Software Foundation · Vendor: apache

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-11 09:16 UTCPublished CVE record published
2026-10-26 18:10 UTCUpdated Record last modified

apache apache-airflow-providers-opensearch UPGRADE

Affected: < 1.9.1

Fixed in: 1.9.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy apache-airflow-providers-opensearch || rpm -q apache-airflow-providers-opensearch || apache-airflow-providers-opensearch --version

2. UPGRADE to 1.9.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade apache-airflow-providers-opensearch

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade apache-airflow-providers-opensearch

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-2026-43826?

apache-airflow-providers-opensearch: upgrade to 1.9.1. Exact commands for each OS are on this page.

Is CVE-2026-43826 being exploited?

CVE-2026-43826 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-2026-43826 affect?

CVE-2026-43826 affects apache-airflow-providers-opensearch. Severity is medium (CVSS 6.5). The OpenSearch logging provider, when configured with a `host` URL that embeds credentials (for example `https://user:password@server.example.com:9200`), wrote the full host URL — including the embedded credentials — into task logs. Any use

How urgent is CVE-2026-43826?

Priority 37/100. On your watchlist

Software pages

Apache Airflow vulnerabilities

References

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