CVE-2026-33311: SVG Injection via Unsanitized Options in @dicebear/core and @dicebear/initials

March 19, 2026

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.

References

github.com/advisories/GHSA-mr9r-mww3-v6gv
github.com/dicebear/dicebear
github.com/dicebear/dicebear/security/advisories/GHSA-mr9r-mww3-v6gv
nvd.nist.gov/vuln/detail/CVE-2026-33311

Code Behaviors & Features

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