CVE-2026-18420
HIGH
8,7
Source: ff89ba41-3aa1-4d27-914a-91399e9639e5
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A
HIGH
8,8
Source: ff89ba41-3aa1-4d27-914a-91399e9639e5
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Description
AI Translation Available
Improper input validation in the Time Series Visual Builder (TSVB) plugin in OpenSearch Dashboards allows an authenticated remote user to execute arbitrary code on the server via a crafted JSON payload to the metrics visualization API endpoint. This issue is a form of prototype pollution that enables remote code execution.
To remediate this issue, users should upgrade to OpenSearch Dashboards 3.8 or later.
EPSS (Exploit Prediction Scoring System)
Trend Analysis
EPSS (Exploit Prediction Scoring System)
Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.
EPSS Score
0,0096
Percentile
0,6th
Updated
Single Data Point
Only one EPSS measurement is available for this CVE. Trend analysis requires multiple data points over time.
1321
Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
IncompleteCommon Consequences
Security Scopes Affected:
Confidentiality
Integrity
Availability
Potential Impacts:
Read Application Data
Modify Application Data
Dos: Crash, Exit, Or Restart
Applicable Platforms
Languages:
JavaScript
https://aws.amazon.com/security/security-bulletins/2026-085-aws/
https://github.com/opensearch-project/OpenSearch-Dashboards/releases/tag/3.8.0
https://github.com/opensearch-project/OpenSearch-Dashboards/security/advisories…