GitHub Advisoryadvisory · npm
GHSA-mr9r-mww3-v6gv SVG Injection via Unsanitized Options in @dicebear/core and @dicebear/initials
MEDIUM
Official page ↗
- Aliases
- CVE-2026-33311
- Ecosystem
- npm
- Packages
- @dicebear/core, @dicebear/initials
- Severity
- Moderate
- CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
- Weaknesses
- CWE-79
- Reviewed
- 2026-03-19
Affected packages
• npm @dicebear/core: >= 5.0.0, < 5.4.4 → fixed in 5.4.4
• npm @dicebear/core: >= 6.0.0, < 6.1.4 → fixed in 6.1.4
• npm @dicebear/core: >= 7.0.0, < 7.1.4 → fixed in 7.1.4
• npm @dicebear/core: >= 8.0.0, < 8.0.3 → fixed in 8.0.3
• npm @dicebear/core: >= 9.0.0, < 9.4.1 → fixed in 9.4.1
• npm @dicebear/initials: >= 5.0.0, < 5.4.4 → fixed in 5.4.4
• npm @dicebear/initials: >= 6.0.0, < 6.1.4 → fixed in 6.1.4
• npm @dicebear/initials: >= 7.0.0, < 7.1.4 → fixed in 7.1.4
• npm @dicebear/initials: >= 8.0.0, < 8.0.3 → fixed in 8.0.3
• npm @dicebear/initials: >= 9.0.0, < 9.4.1 → fixed in 9.4.1
Description
Summary
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`.
Affected packages
• `@dicebear/core` — `backgroundColor` option values interpolated into SVG attributes without escaping (affects `solid` and `gradientLinear` background types)
• `@dicebear/initials` — `fontFamily` and `textColor` option values interpolated into SVG attributes without escaping
Fix
All affected SVG attribute values are now properly escaped using XML entity encoding. Users should upgrade to the listed patched versions.
Mitigating factors
• 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
Related
Alias · CVE (1)
- CVE-2026-33311 DiceBear is an avatar library for designers and developers. vulnerability
Weakness · CWE (1)
- CWE-79 Improper Neutralization of Input During Web Page Generation weakness