Summaryinfo

A vulnerability classified as problematic was found in DiceBear up to 5.4.3/6.1.3/7.1.3/8.0.2/9.4.0. This affects the function createAvatar. Such manipulation leads to cross site scripting. This vulnerability is uniquely identified as CVE-2026-33311. The attack can be launched remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in DiceBear up to 5.4.3/6.1.3/7.1.3/8.0.2/9.4.0. It has been rated as problematic. Affected by this issue is the function createAvatar. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to 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. Impacted is integrity. CVE summarizes:

DiceBear is an avatar library for designers and developers. Starting in version 5.0.0 and prior to versions 5.4.4, 6.1.4, 7.1.4, 8.0.3, and 9.4.1, SVG attribute values derived from user-supplied options (`backgroundColor`, `fontFamily`, `textColor`) were not XML-escaped before interpolation into SVG output. This could allow Cross-Site Scripting (XSS) when applications pass untrusted input to `createAvatar()` and serve the resulting SVG inline or with `Content-Type: image/svg+xml`. Starting in versions 5.4.4, 6.1.4, 7.1.4, 8.0.3, and 9.4.1, all affected SVG attribute values are properly escaped using XML entity encoding. Users should upgrade to the listed patched versions. Some mitigating factors limit vulnerability. Applications that validate input against the library's JSON Schema before passing it to `createAvatar()` are not affected. The DiceBear CLI validates input via AJV and was not vulnerable. Exploitation requires that an application passes untrusted, unvalidated external input directly as option values.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-33311 since 03/18/2026. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Upgrading to version 5.4.4, 6.1.4, 7.1.4, 8.0.3 or 9.4.1 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

• DiceBear

Version

• 5.4.0
• 5.4.1
• 5.4.2
• 5.4.3
• 6.1.0
• 6.1.1
• 6.1.2
• 6.1.3
• 7.1.0
• 7.1.1
• 7.1.2
• 7.1.3
• 8.0.0
• 8.0.1
• 8.0.2
• 9.0
• 9.1
• 9.2
• 9.3
• 9.4.0

Website

• Product: https://github.com/dicebear/dicebear/

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