01 Record

CVE-2026-18420

RCE via Prototype Pollution in OpenSearch Dashboards

HighPUBLISHEDCNA: AMZN

Base score8.7 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

02 Description

RCE via Prototype Pollution in OpenSearch Dashboards

Published

2026-08-20 20:40Z1 DAY AGO

Last updated

2026-08-20 20:40Z1 DAY AGO

Reserved

2026-07-30

Assigning CNA

AMZN

Record state

PUBLISHED

Severity

High (CVSS 8.7)

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Weaknesses

CWE-1321Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')Variant

SSVC decision

No CISA-ADP assessment

Data version

5.2

Document digest

504805ad7d960620b636fed5f66162e4235421fb297468bc6043b71671b08c13

VendorProductVersionsPlatforms

OpenSearchOpenSearch Dashboards3.0.0 to < 3.8.0—