Severity:
HIGH RISK
(8.7)
Stored XSS (CWE-79) in Kestra Flow Markdown Parser
CVE-2026-55839
Deferred
Vulnerability Type
Category:
Stored Cross-Site Scripting
CWE:
CWE-79
Impact:
Stored client-side code execution and account-context compromise
Severity:
HIGH RISK
(8.7)
CVSS Version:
3.1
Catch This CVE While Code Is Being Written
Detect vulnerable code directly in pull requests, so CVEs are fixed before merge.
Summary
Affected Context
Exploit Preconditions
Why This Happens
Potential Impact
General Mitigation Guidance
How Teams Detect Issues Like This
Frequently Asked Questions
Source
NDV
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