CVE-2026-18952

Missing Input Validation in Threat Intel Feed Parser in OpenSearch Security Analytics Plugin

State: Published
Severity: 8.6 High
Published: Aug 12, 2026
Updated: Aug 21, 2026
Reserved: Aug 5, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	8.6 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N	AMZN
3.1	8.1 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N	AMZN

Weaknesses

CWE-918 Server-Side request forgery (SSRF)

Affected Products

Product	Versions
OpensearchAWS	2.15.0 to before 3.5.0Affected
OpensearchGithub	2.15.0 to before 3.7.0Affected

References

https://docs.aws.amazon.com/opensearch-service/latest/developerguide/service-software.htmlpatch
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-6v3mrelease-notes

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