## Elasticsearch 8.19.19, 9.3.8, 9.4.4 Security Update (ESA-2026-188)

- 種別: advisory
- 関連技術: elasticsearch
- 公開日時: 2026-10-06T18:37:40.000Z
- 情報源: Elastic Security Announcements (https://discuss.elastic.co/t/elasticsearch-8-19-19-9-3-8-9-4-4-security-update-esa-2026-188/390861)
- パーマリンク: https://vulnpulse.app/items/elastic-security-0f7ddb40c302

Incorrect Authorization in Elasticsearch Leading to Unauthorized Data Stream Modification Incorrect Authorization (CWE-863) in Elasticsearch can lead to unauthorized data stream modification via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). An authenticated user with sufficient privileges over a single resource could use the Modify Data Streams API to modify a data stream to which they were not otherwise authorized, potentially injecting data into it or affecting its ability to be searched normally. This issue does not allow an attacker to read the contents of a data str…