Vulnerability · Published Aug 12, 2026 · Assigned by AMZN
CVE-2026-19311Missing Authorization in Execute Monitor API in OpenSearch Alerting Plugin
High 8.1
In plain English
A high-severity security flaw in OpenSearch from AWS. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.6%top 52.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| AWS | OpenSearch | 2.4 – through 3.5 |
| Github | OpenSearch | 2.4.0 – through 2.19.53.0.0 – through 3.7.0 |
Weakness: CWE-475 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N