What is the CVSS score of EUVD-2026-63657?

EUVD-2026-63657 has a CVSS 3.1 base score of 4.7 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.2%.

Is there a public PoC exploit available for EUVD-2026-63657?

Yes, a public proof-of-concept exploit is available for EUVD-2026-63657. Prioritise patching immediately. EPSS: 0.2%.

Is there a patch available for EUVD-2026-63657?

Yes, a patch is available for EUVD-2026-63657. Update the affected software to the latest version immediately.

DiceBear EUVD-2026-63657

| CVE-2026-68921 MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2026-08-20 security-advisories@github.com

GHSA-gcr2-9v8m-gq45

XSS

4.7

CVSS 3.1 · Vendor: github

Severity by source

Vendor (github) PRIMARY

4.7 MEDIUM

AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

Primary rating from Vendor (github) · only source for this CVE.

CVSS VectorVendor: github

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Patch available

Aug 20, 2026 - 22:04 EUVD

Source Code Evidence Fetched

Aug 20, 2026 - 21:36 vuln.today

Analysis Generated

Aug 20, 2026 - 21:36 vuln.today

Blast Radius

ecosystem impact

† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth

41 npm packages depend on @dicebear/core (36 direct, 5 indirect)
2 npm packages depend on @dicebear/initials (1 direct, 1 indirect)

Ecosystem-wide dependent count for version 9.4.3 and other introduced versions.

DescriptionCVE.org

DiceBear is an avatar library for designers and developers. Prior to 9.4.3, @dicebear/core interpolates the rotate option into an SVG transform attribute without XML escaping in addRotate in packages/@dicebear/core/src/utils/svg.ts, while @dicebear/initials similarly emits fontSize and fontWeight without escaping in packages/@dicebear/initials/src/index.ts. Runtime callers can pass strings despite the numeric TypeScript types, break out of the attributes, and inject arbitrary SVG markup. Script can execute in the page origin when the generated avatar is inserted inline or served as image/svg+xml and opened directly, although exploitation requires an application to pass untrusted values into these normally developer-controlled options. This issue is fixed in @dicebear/core and @dicebear/initials version 9.4.3.

AnalysisAI

SVG attribute injection in @dicebear/core and @dicebear/initials prior to 9.4.3 enables cross-site scripting when an application routes untrusted input through the rotate, fontSize, or fontWeight avatar options. TypeScript types these parameters as numbers, but JavaScript runtime coercion allows string values, permitting attribute breakout and injection of arbitrary SVG markup — payloads confirmed in the commit test suite include onerror-carrying <image> elements. …