CVE-2026-18952Missing Input Validation in Threat Intel Feed Parser in OpenSearch Security Analytics Plugin

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.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://docs.aws.amazon.com/opensearch-service/latest/developerguide/service-software.html patch
• https://aws.amazon.com/security/security-bulletins/2026-079-aws/ vendor-advisoryrelease-notes
• https://github.com/opensearch-project/security-analytics/security/advisories/GHSA-w946-8jxc-6v3m release-notes