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CVE-2026-19311— Missing Authorization in Execute Monitor API in OpenSearch Alerting Plugin

Quick assessment

Affected
AWS OpenSearch
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenSearch Alerting是OpenSearch组织的一个监控告警管理工具。 OpenSearch Alerting 2.4至3.5版本、2.4.0至2.19.5版本和3.0.0至3.7.0版本存在处理逻辑错误漏洞，该漏洞源于Execute Monitor API缺少授权，可能允许经过身份验证的远程用户通过特制的内联监控请求（包含意外的数据源和输入索引参数）读取、修改或删除任意索引数据。

CVSS 8.1 · High EPSS 0.58% · P46

Possible ATT&CK Techniques 1 AI

T1136 · Create Account

Affected Version Matrix 3

VendorProduct Version RangeStatus
AWS OpenSearch 2.4≤ 3.5 affected
Github OpenSearch 2.4.0≤ 2.19.5 affected
3.0.0≤ 3.7.0 affected
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I. Basic Information for CVE-2026-19311

Vulnerability Information
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Vulnerability Title
Missing Authorization in Execute Monitor API in OpenSearch Alerting Plugin
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
从输入到API的未定义行为
Source: CVE Program / CVE List V5
Vulnerability Title
OpenSearch Alerting 处理逻辑错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenSearch Alerting是OpenSearch组织的一个监控告警管理工具。 OpenSearch Alerting 2.4至3.5版本、2.4.0至2.19.5版本和3.0.0至3.7.0版本存在处理逻辑错误漏洞，该漏洞源于Execute Monitor API缺少授权，可能允许经过身份验证的远程用户通过特制的内联监控请求（包含意外的数据源和输入索引参数）读取、修改或删除任意索引数据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
AWS OpenSearch 2.4 ~ 3.5 -
Github OpenSearch 2.4.0 ~ 2.19.5 -

II. Public POCs for CVE-2026-19311

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 8111 chars
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III. Intelligence Information for CVE-2026-19311

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Vendor Advisories for CVE-2026-19311 (2)

Vendor Pages for CVE-2026-19311 (1)

Same Patch Batch · AWS · 2026-08-12 · 4 CVEs total

CVE-2026-18952 8.1 HIGH Missing Input Validation in Threat Intel Feed Parser in OpenSearch Security Analytics Plug
CVE-2026-19642 5.9 MEDIUM Out-of-bounds write in the Base64 decoder in Amazon aws-sdk-cpp
CVE-2026-19643 5.3 MEDIUM Out-of-bounds read in the Base64 decoder in Amazon aws-sdk-cpp on signed-char platforms

IV. Related Vulnerabilities

Same product: OpenSearch
Same vendor: AWS
Same weakness: CWE-475

V. Comments for CVE-2026-19311

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