# CVE-2026-129447: Kroki before 0.36.0 Reflected XSS via DBML Table URLs

Status: published. Published: 2026-11-14. Updated: 2026-11-14.

Kroki before 0.36.0 contains a reflected cross-site scripting vulnerability in the /dbml/svg endpoint that allows unauthenticated attackers to inject javascript: hyperlinks by supplying crafted DBML table url, headercolor, or TableGroup color settings. Attackers can send a crafted SVG link that, when opened and the table header clicked, executes attacker JavaScript in the Kroki origin.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/yuzutech/kroki/commit/b57e1bdc39df9521b249db0dbd56c5e0a8b7e33d

## Affected products and versions

- yuzutech / kroki (io.kroki/kroki-server): ≥ 0; < 0.36.0 (affected, semver); 0.36.0 (unaffected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 5.3 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 6.1 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-79

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/yuzutech/kroki/security/advisories/GHSA-fr36-wcx2-7gfq (CNA: VulnCheck; vendor-advisory)

- https://github.com/yuzutech/kroki/commit/b57e1bdc39df9521b249db0dbd56c5e0a8b7e33d (CNA: VulnCheck; patch)

- https://github.com/yuzutech/kroki/releases/tag/v0.36.0 (CNA: VulnCheck; release-notes)

- https://github.com/yuzutech/kroki/blob/v0.35.0/dbml/index.js#L13 (CNA: VulnCheck; technical-description)

- https://www.vulncheck.com/advisories/kroki-before-0.36.0-reflected-xss-via-dbml-table-urls (CNA: VulnCheck; third-party-advisory)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-129447; retrieved 2026-11-14; source updated 2026-11-14

Revision: 7a0714aae1a16f2a3f6fa8040525a51567e71fa37af6a2edd09323bdf72f2f77

Canonical: https://y2.dev/cve/CVE-2026-129447

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