Vulnerability · Published Mar 6, 2026 · Assigned by GitHub_M
CVE-2026-29082Kestra: Stored Cross-Site Scripting in Markdown File Preview
High 7.3
In plain English
A high-severity cross-site scripting in kestra from kestra-io. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities).
Severity (CVSS 3.1)7.3High
Exploit odds (30 days)0.3%top 80.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
References
- https://github.com/kestra-io/kestra/security/advisories/GHSA-r36c-83hm-pc8j x_refsource_CONFIRM
- https://github.com/kestra-io/kestra/releases/tag/v1.0.30 x_refsource_MISC