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.

References

https://aws.amazon.com/security/security-bulletins/2026-079-aws/

https://github.com/opensearch-project/security-analytics/security/advisories/GHSA-w946-8jxc-6v3m

https://docs.aws.amazon.com/opensearch-service/latest/developerguide/service-software.html

Details

Source: Mitre, NVD

Published: 2026-08-12

Updated: 2026-08-21

Risk Information

CVSS v2

Base Score: 8.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 8.1

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Severity: High

CVSS v4

Base Score: 8.6

Vector: 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

Severity: High

EPSS

EPSS: 0.0032