CVE-2026-55839: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in kestra-io kestra
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.
CVE-2026-55839: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in kestra-io kestra
Description
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.
CVSS v3.1
Score 8.7high
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-17T16:29:38.865Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a847f32c6e8be03326a99a9
Added to database: 08/18/2026, 15:50:10 UTC
Last updated: 08/18/2026, 15:50:10 UTC
Views: 1
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