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Kestra vulnerable to stored XSS via custom Markdown [[link]] attribute injection

Kestra vulnerable to stored XSS via custom Markdown [[link]] attribute injection

CVE-2026-55839Published 1 week agoUpdated 1 week agoSource: OSV

Affected packages

  • io.kestra:kestrabefore 1.3.24

Exploit signal

Known exploited (CISA KEV)
No
EPSS score
EPSS percentile

EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.

Kestra vulnerable to stored XSS via custom Markdown [[link]] attribute injection | HackTribune