CVE-2026-33311: @dicebear/core SVG Injection Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-mr9r-mww3-v6gv",
  "modified" : "2026-03-25T20:52:39Z",
  "published" : "2026-03-19T17:49:28Z",
  "aliases" : [ "CVE-2026-33311" ],
  "summary" : "SVG Injection via Unsanitized Options in @dicebear/core and @dicebear/initials",
  "details" : "## Summary\n\nSVG 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`.\n\n## Affected packages\n\n- **`@dicebear/core`** — `backgroundColor` option values interpolated into SVG attributes without escaping (affects `solid` and `gradientLinear` background types)\n- **`@dicebear/initials`** — `fontFamily` and `textColor` option values interpolated into SVG attributes without escaping\n\n## Fix\n\nAll affected SVG attribute values are now properly escaped using XML entity encoding. Users should upgrade to the listed patched versions.\n\n## Mitigating factors\n\n- Applications that validate input against the library's JSON Schema before passing it to `createAvatar()` are not affected\n- The DiceBear CLI validates input via AJV and was not vulnerable\n- Exploitation requires that an application passes untrusted, unvalidated external input directly as option values",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@dicebear/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "5.0.0"
      }, {
        "fixed" : "5.4.4"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 5.4.3"
    }
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@dicebear/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "6.0.0"
      }, {
        "fixed" : "6.1.4"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 6.1.3"
    }
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@dicebear/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "7.0.0"
      }, {
        "fixed" : "7.1.4"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 7.1.3"
    }
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@dicebear/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "8.0.0"
      }, {
        "fixed" : "8.0.3"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 8.0.2"
    }
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@dicebear/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "9.0.0"
      }, {
        "fixed" : "9.4.1"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 9.4.0"
    }
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@dicebear/initials"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "5.0.0"
      }, {
        "fixed" : "5.4.4"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 5.4.3"
    }
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@dicebear/initials"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "6.0.0"
      }, {
        "fixed" : "6.1.4"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 6.1.3"
    }
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@dicebear/initials"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "7.0.0"
      }, {
        "fixed" : "7.1.4"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 7.1.3"
    }
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@dicebear/initials"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "8.0.0"
      }, {
        "fixed" : "8.0.3"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 8.0.2"
    }
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@dicebear/initials"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "9.0.0"
      }, {
        "fixed" : "9.4.1"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 9.4.0"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/dicebear/dicebear/security/advisories/GHSA-mr9r-mww3-v6gv"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-33311"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/dicebear/dicebear"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-03-19T17:49:28Z",
    "nvd_published_at" : "2026-03-24T14:16:30Z"
  }
}