CVE-2026-19311

8.6 highEPSS 0.6%

High (8.6). EPSS 0.6% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

8.6 high

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

CVSS 3.1

8.1 high

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 47% of CVEs (scores of 2026-10-31)
CWE: CWE-475
Published: 2026-08-12
Modified: 2026-08-13
Record from: the NVD, synced 2026-10-19

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

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