Cross-Site Scripting (XSS) in @dicebear/core (CVE-2026-68921)
Summary
Cross-site scripting in @dicebear/core (CVE-2026-68921). Risk of unauthorized operations or information disclosure. Exploitable via rotate. Mitigation: upgrade to 9.4.3 or later.
Original description
The description as published by the source.
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.
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-68921 has been found in @dicebear/core.
Attackers can target a specific entry point like rotate over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 4.7/10.
What to do: upgrade @dicebear/core to 9.4.3 or later.
If unsure, ask your IT team or search "@dicebear/core CVE-2026-68921" on the vendor's site.
CVE-2026-68921 (@dicebear/core) — CWE-79 / CVSS v3 4.7
Attack vector: remote (network-reachable) / unauthenticated
Attack surface: rotate / transform / backgroundColor / fontFamily
Patched: 9.4.3 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Cross-site scripting (XSS) (CWE-79) exists in @dicebear/core. Attackers reach the vulnerable code path via rotate without authentication.
Check the vendor advisory for the affected versions of @dicebear/core. Attack surface: rotate / transform / backgroundColor / fontFamily.
Severity: Medium (CVSS 4.7/10). Risk of unauthorized operations or information disclosure.
Update to 9.4.3.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r '@dicebear/core' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r '@dicebear/core' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
@dicebear/coreを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade @dicebear/core to 9.4.3ステージング環境で 9.4.3 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory github.com
- advisory nvd.nist.gov
- advisory github.com
- patch github.com
- web github.com
- web github.com