XSS in Kestra
CVE-2026-29082
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.003 (25.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 25.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Kestra
- Kestra-Io Kestra — versions <= 1.1.10
Weakness classification (CWE)
References
- github.com/kestra-io/kestra/security/advisories/GHSA-r36c-83hm-pc8j (Exploit, Vendor Advisory)
- github.com/kestra-io/kestra/releases/tag/v1.0.30 (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-29082?
- CVE-2026-29082 is a high-severity vulnerability in Kestra, classified under Cross-site Scripting. CVSS score: 7.3/10. Published 2026-03-06.
- How severe is CVE-2026-29082?
- High severity. CVSS v3 base score is 7.3 out of 10.