{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-33664", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-23T15:23:42.220Z", "datePublished": "2026-03-26T21:13:12.467Z", "dateUpdated": "2026-03-26T21:13:12.467Z"}, "containers": {"cna": {"title": "Kestra Vulnerable to Stored Cross-Site Scripting via Flow YAML Fields", "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "lang": "en", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.3, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/kestra-io/kestra/security/advisories/GHSA-v2mc-8q95-g7hp", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/kestra-io/kestra/security/advisories/GHSA-v2mc-8q95-g7hp"}], "affected": [{"vendor": "kestra-io", "product": "kestra", "versions": [{"version": "<= 1.3.3", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-26T21:13:12.467Z"}, "descriptions": [{"lang": "en", "value": "Kestra is an open-source, event-driven orchestration platform Versions up to and including 1.3.3 render user-supplied flow YAML metadata fields \u2014 description, inputs[].displayName, inputs[].description \u2014 through the Markdown.vue component instantiated with html: true. The resulting HTML is injected into the DOM via Vue's v-html without any sanitization. This allows a flow author to embed arbitrary JavaScript that executes in the browser of any user who views or interacts with the flow. This is distinct from GHSA-r36c-83hm-pc8j / CVE-2026-29082, which covers only FilePreview.vue rendering .md files from execution outputs. The present finding affects different components, different data sources, and requires significantly less user interaction (zero-click for input.displayName). As of time of publication, it is unclear if a patch is available."}], "source": {"advisory": "GHSA-v2mc-8q95-g7hp", "discovery": "UNKNOWN"}}}}

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