---
id: CVE-2026-18952
title: >-
  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 …
summary: >-
  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 …
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-918
published: '2026-08-12'
updated: '2026-08-21'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-18952'
references:
  - url: 'https://aws.amazon.com/security/security-bulletins/2026-079-aws/'
    label: ff89ba41-3aa1-4d27-914a-91399e9639e5
  - url: >-
      https://docs.aws.amazon.com/opensearch-service/latest/developerguide/service-software.html
    label: ff89ba41-3aa1-4d27-914a-91399e9639e5
  - url: >-
      https://github.com/opensearch-project/security-analytics/security/advisories/GHSA-w946-8jxc-6v3m
    label: ff89ba41-3aa1-4d27-914a-91399e9639e5
tags:
  - nvd
epss: 0.00519
epssPercentile: 0.41585
ingestedAt: '2026-08-22T13:32:36.049Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.