Kroki before 0.36.0 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject scripts via…
CVE-2026-129484
Kroki before 0.36.0 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject scripts via unvalidated svg-color-dark-scheme and svg-color-light-scheme options. Attackers can craft a GET /goat/svg URL whose option value closes the SVG style element, executing JavaScript in the Kroki origin when victims open it.
Assessment
- CVSS
- 5.3 (v4.0)
- Severity
- Medium
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 15 November 2026
- Last updated
- 15 November 2026
- Assigner
- VulnCheck
CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
At the source
References
- https://github.com/yuzutech/kroki/security/advisories/GHSA-xp94-px2v-f7f2
- https://github.com/yuzutech/kroki/commit/a0a1435cc38eb7b258c555a883b7687424ad6784
- https://github.com/yuzutech/kroki/releases/tag/v0.36.0
- https://github.com/yuzutech/kroki/blob/v0.35.0/server/src/main/java/io/kroki/server/service/Goat.java#L61-L71
- https://www.vulncheck.com/advisories/kroki-before-0.36.0-reflected-xss-via-goat-svg-color-scheme-options
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