CVE-2026-33311

@dicebear/core and @dicebear/initials Vulnerable to SVG Injection via Unsanitized Options

MEDIUM

4.7

CVSS Score

Published: March 24, 2026 at 01:23 PM UTC

Updated: June 17, 2026 at 10:37 AM UTC

1 product affected across 1 vendorDicebear

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Severity

MEDIUM4.7

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Dicebear · Dicebear

95%

v < 5.4.4v < 6.1.4v < 7.1.4v < 8.0.3v < 9.4.15.0.0 ≤ v < 5.4.46.0.0 ≤ v < 6.1.47.0.0 ≤ v < 7.1.48.0.0 ≤ v < 8.0.39.0.0 ≤ v < 9.4.1

Affected range stops below 5.4.4, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.1.4, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.1.4, so it looks safe — our inference, not a vendor statement

Affected range stops below 8.0.3, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.4.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://github.com/dicebear/dicebear/security/advisories/GHSA-mr9r-mww3-v6gv

References (1)

x_refsource_CONFIRMVendor Advisory

Source: cverecord

https://github.com/dicebear/dicebear/security/advisories/GHSA-mr9r-mww3-v6gv

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.7MEDIUMGitHub_M

Attack Vector: NETWORK
Complexity: HIGH
Privileges: NONE
User Interaction: REQUIRED
Scope: CHANGED
Confidentiality: LOW
Integrity: LOW
Availability: NONE

Vector?

Quick Info

StatusANALYZED

CWE

CWE-79

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