CVE-2026-90772: Amundsen Frontend through 4.3.0 Stored XSS via Description

Q: Who can exploit this issue?

An attacker needs permission or another path to place a malicious description into the metadata service or Elasticsearch. The vulnerable rendering occurs for table, dashboard, and feature descriptions.

Q: Which users are exposed to the injected script?

Any user whose browser views search results containing the malicious description can have JavaScript executed in their browser. User interaction is required because the affected search results must be viewed.

Q: Are default deployments affected?

The available information does not establish whether default metadata-service or Elasticsearch write permissions allow an untrusted user to modify descriptions. Exposure depends on who can inject or alter the relevant description data.

Q: What can be done before patching?

Restrict write access to descriptions in the metadata service and Elasticsearch to trusted users and processes. Review existing table, dashboard, and feature descriptions for malicious HTML, including event-handler attributes such as onerror.

Published Sep 13, 2026

Updated

Amundsen frontend through 4.3.0 renders table, dashboard, and feature descriptions with dangerouslySetInnerHTML without HTML sanitization in ResourceListItem components. Attackers can inject malicious markup like img elements with onerror handlers into descriptions via the metadata service or Elasticsearch, executing JavaScript in every user's browser that views search results.

Affected Software

1 affected component

Amundsen Frontend<=4.3.0

Event History

Sep 13, 2026

CVE Published

via MITRE·10:45 AM

Data Sourced

via MITRE·10:45 AM

DescriptionSeverityWeakness

Frequently Asked Questions

Who can exploit this issue?

An attacker needs permission or another path to place a malicious description into the metadata service or Elasticsearch. The vulnerable rendering occurs for table, dashboard, and feature descriptions.

Which users are exposed to the injected script?

Any user whose browser views search results containing the malicious description can have JavaScript executed in their browser. User interaction is required because the affected search results must be viewed.

Are default deployments affected?

The available information does not establish whether default metadata-service or Elasticsearch write permissions allow an untrusted user to modify descriptions. Exposure depends on who can inject or alter the relevant description data.

What can be done before patching?

Restrict write access to descriptions in the metadata service and Elasticsearch to trusted users and processes. Review existing table, dashboard, and feature descriptions for malicious HTML, including event-handler attributes such as onerror.

CVE-2026-90772: Amundsen Frontend through 4.3.0 Stored XSS via Description

Affected Software

Event History

Frequently Asked Questions

Who can exploit this issue?

Which users are exposed to the injected script?

Are default deployments affected?

What can be done before patching?

Company

Resources

Contact

Frequently Asked Questions

Who can exploit this issue?

Which users are exposed to the injected script?

Are default deployments affected?

What can be done before patching?