CVE-2026-18952
High
Description
Missing input validation in the threat intelligence feed parser in the OpenSearch Security Analytics plugin might allow an authenticated remote user to perform server-side request forgery and read local files via a crafted URL parameter to the threat intel source configuration endpoint.
SeverityHigh
CVSS8.1
Exploit probability44. percentile0.5%
ProductOpensearch
PublishedAug 12, 2026
First seenAug 12, 2026
Weakness typeCWE-918Server-side request forgery (SSRF)
How to fix
Update
- AWS Opensearch3.5.0 or later
- Github Opensearch3.7.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| AWS Opensearch | 2.15.0 ≤ v < 3.5.0 | 3.5.0 |
| Github Opensearch | 2.15.0 ≤ v < 3.7.0 | 3.7.0 |
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