CVE-2026-56144
mediumpriority · track · 26OT risk · elevatedEPSS 0.003 · 25 %ileDEEUUSEPSS · scored 2026-10-27
Incorrect Authorization (CWE-863) in Elasticsearch can allow an authenticated user with limited index privileges to exploit insufficient authorization controls in the ingest simulation feature. By targeting indices they are not authorized to access directly, the user can cause those indices' configured ingest pipelines to execute and return their output, potentially disclosing data processed or enriched by those pipelines. Additionally, the same feature can be used to retrieve index mapping metadata for indices the user are not authorized to access directly.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (15)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-2457Elasticsearch: Mehrere Schwachstellen ermöglichen DoS und die Offenlegung von InformationenDeutsch2026-07-21csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Elasticsearch ausnutzen, um einen Denial of Service Angriff durchzuführen und vertrauliche Informationen offenzulegen.
- BIT-elasticsearch-2026-56144Incorrect Authorization in Elasticsearch Leading to Information Disclosure2026-07-28vendor · osvUS
Incorrect Authorization (CWE-863) in Elasticsearch can allow an authenticated user with limited index privileges to exploit insufficient authorization controls in the ingest simulation feature. By targeting indices they are not authorized to access directly, the user can cause those indices' configured ingest pipelines to execute and return their output, potentially disclosing data processed or enriched by those pipelines. Additionally, the same feature can be used to retrieve index mapping metadata for indices the user are not authorized to access directly.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (3)
External citations — patches, advisories, analysis.
- https://discuss.elastic.co/t/elasticsearch-8-19-18-9-3-7-9-4-4-security-update-esa-2026-56/388555cnnvd
- https://discuss.elastic.co/t/elasticsearch-8-19-18-9-3-7-9-4-4-security-update-esa-2026-56/388555enisa_euvd
- https://discuss.elastic.co/t/elasticsearch-8-19-18-9-3-7-9-4-4-security-update-esa-2026-56/388555Vendor Advisorynvd
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