CVE-2026-19311
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.
CSIRTS triage
- What
- Missing authorization in the Execute Monitor API allows authenticated users with alerting_full_access role to read, modify, or delete arbitrary index data via crafted inline monitor requests.
- Who is affected
- Users running OpenSearch Alerting Plugin versions 2.4.0 through 2.19.5 or 3.0.0 through 3.7.0, and AWS OpenSearch Service domains running engine versions 2.4 through 3.5.
- Urgency
- Moderate; unpatched vulnerable versions allow privilege misuse by authenticated users with a specific role to access and modify sensitive data.
- Action
- Upgrade OpenSearch Alerting Plugin to version 2.19.6 or 3.8.0, or apply AWS OpenSearch Service software update R20260428-P3 or later.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch CVE-2026-19311
Get an email if CVE-2026-19311 is added to CISA KEV, gains public exploit code, or a new advisory cites it — max one per day, one-click unsubscribe.
Exploitation outlook
- Low exploitation risk0.41% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 35% of all EPSS-scored CVEs.
Advisory coverage (2)
External references
Embed the live status
— this badge updates automatically when the KEV or exploit status changes. How to embed it →
[](https://www.csirts.com/cve/CVE-2026-19311)