CVE-2026-19311

EUVD-2026-57420
Missing authorization in the Execute Monitor API in Amazon OpenSearch Alerting plugin might allow an authenticated remote user to read, modify, or delete arbitrary index data via a crafted inline monitor request with unintentional data source and input index parameters.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.1 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Common Weakness Enumeration
References
https://aws.amazon.com/about-aws/whats-new/2026/03/amazon-opensearch-service-version-3-5/
https://aws.amazon.com/security/security-bulletins/2026-078-aws/
https://github.com/opensearch-project/alerting/security/advisories/GHSA-xxpg-q3wh-685q