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CVE-2026-55839

Kestra: Stored XSS via custom Markdown [[link]] attribute injection PUBLISHED

Description (CNA)

Kestra is an open-source, event-driven orchestration platform. Prior to 1.3.24, Kestra's custom Markdown parser in ui/src/utils/markdown_plugins/link.ts allows a user with permission to create or update a Flow description to inject JavaScript event-handler attributes through the custom [[link]] syntax, causing stored cross-site scripting when another user opens the description or information panel in the Flow list. This issue is fixed in version 1.3.24.

Affected (CNA)

Vendor / productVersions
kestra-io / kestraaffected < 1.3.24

CWE

CWE-79

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.