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GHSA-mr9r-mww3-v6gv

MediumCVSS 4.7 / 10
Published Mar 19, 2026·Last modified Apr 17, 2026
Affected Components(0)

No affected components available

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
Risk Scores
Base Score
4.7

The vulnerability can be exploited over the network without needing physical access. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker does not need any special privileges or access rights. The attacker needs the user to perform some action, like clicking a link. The vulnerability can affect other systems as well, not just the initial system. There is a low impact on the confidentiality of the information. There is a low impact on the integrity of the data.

Threat Intelligence
4.3

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
0.18%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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Medium severity
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