CVE-2026-102407
Incorrect Authorization in Elasticsearch Leading to Unauthorized Data Stream Modification
CVSS Score
5.4
EPSS Score
0.0%
EPSS Percentile
0th
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 stream they do not otherwise have access to.
| CWE | CWE-863 |
| Vendor | elastic |
| Product | elasticsearch |
| Ecosystems | |
| Industries | Technology |
| Published | Oct 6, 2026 |
| Last Updated | Oct 6, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low
Affected Versions
Elastic / Elasticsearch
7.17.5 ≤ 7.17.29 8.2.2 ≤ 8.19.18 9.0.0 ≤ 9.3.7 9.4.0 ≤ 9.4.3