CVE-2026-43826

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 backend credentials via a secret backend rather than embedding them in the `[opensearch] host` URL.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/apache/airflow/pull/65509	Issue Tracking Patch
https://lists.apache.org/thread/bxsrqx1vwssovnwnrvgh9xcosptmf73y	Mailing List Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/05/10/2	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:apache:apache-airflow-providers-opensearch:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-05-11 09:16

Updated : 2026-06-17 10:49

NVD link : CVE-2026-43826

Mitre link : CVE-2026-43826

CVE.ORG link : CVE-2026-43826

JSON object : View

Products Affected

apache

apache-airflow-providers-opensearch

CWE

CWE-532

Insertion of Sensitive Information into Log File

{"id": "CVE-2026-43826", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-43826", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-11T12:59:58.275202Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security@apache.org", "affectedData": [{"vendor": "Apache Software Foundation", "product": "Apache Airflow Providers OpenSearch", "versions": [{"status": "affected", "version": "0", "lessThan": "1.9.1", "versionType": "semver"}], "packageName": "apache-airflow-providers-opensearch", "collectionURL": "https://pypi.python.org", "defaultStatus": "unaffected"}]}], "published": "2026-05-11T09:16:26.143", "references": [{"url": "https://github.com/apache/airflow/pull/65509", "tags": ["Issue Tracking", "Patch"], "source": "security@apache.org"}, {"url": "https://lists.apache.org/thread/bxsrqx1vwssovnwnrvgh9xcosptmf73y", "tags": ["Mailing List", "Vendor Advisory"], "source": "security@apache.org"}, {"url": "http://www.openwall.com/lists/oss-security/2026/05/10/2", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security@apache.org", "description": [{"lang": "en", "value": "CWE-532"}]}], "descriptions": [{"lang": "en", "value": "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 \u2014 including the embedded credentials \u2014 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 backend credentials via a secret backend rather than embedding them in the `[opensearch] host` URL."}], "lastModified": "2026-06-17T10:49:58.807", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:apache:apache-airflow-providers-opensearch:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E7D9DAF2-9386-44AD-951B-C8F34473AFDD", "versionEndExcluding": "1.9.1"}], "operator": "OR"}]}], "sourceIdentifier": "security@apache.org"}