Yuzutech Kroki up to 0.35.x /goat/svg svg-color-dark-scheme/svg-color-light-scheme cross site scripting

Summaryinfo

A vulnerability identified as problematic has been detected in Yuzutech Kroki up to 0.35.x. This impacts an unknown function of the file /goat/svg. Performing a manipulation of the argument svg-color-dark-scheme/svg-color-light-scheme results in cross site scripting. This vulnerability was named CVE-2026-129484. The attack may be initiated remotely. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Yuzutech Kroki up to 0.35.x. It has been classified as problematic. This affects some unknown functionality of the file /goat/svg. The manipulation of the argument svg-color-dark-scheme/svg-color-light-scheme with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-129484 since 11/15/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Upgrading to version 0.36.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-126081). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• Yuzutech

Name

• Kroki

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17
• 0.18
• 0.19
• 0.20
• 0.21
• 0.22
• 0.23
• 0.24
• 0.25
• 0.26
• 0.27
• 0.28
• 0.29
• 0.30
• 0.31
• 0.32
• 0.33
• 0.34
• 0.35

Website

• Product: https://github.com/yuzutech/kroki/

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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