PT-2026-77151 · Kestra · Kestra
CVE-2026-55839
·
Published
2026-08-18
·
Updated
2026-08-18
CVSS v3.1
8.7
High
| Vector | AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N |
Name of the Vulnerable Software and Affected Versions
Kestra versions prior to 1.3.24
Description
An issue exists in the custom Markdown parser located in
ui/src/utils/markdown plugins/link.ts. A user with permissions to create or update a Flow description can inject JavaScript event-handler attributes using the custom [[link]] syntax. This leads to stored cross-site scripting (XSS), which occurs when another user views the description or the information panel within the Flow list.Recommendations
Update to version 1.3.24.
Exploit
Fix
XSS
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Weakness Enumeration
Related Identifiers
Affected Products
Kestra