← Back
GHSA-hwmc-r6mf-jh83
Cross-Site Scripting (XSS) in spatie/schema-org (GHSA-hwmc-r6mf-jh83)
Summary
cross-site scripting in spatie/schema-org (GHSA-hwmc-r6mf-jh83). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `4.0.2` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **GHSA-hwmc-r6mf-jh83** has been found in spatie/schema-org.
Risk of unauthorized operations or information disclosure. CVSS score: ?/10.
What to do: upgrade spatie/schema-org to **4.0.2** or later.
If unsure, ask your IT team or search "spatie/schema-org GHSA-hwmc-r6mf-jh83" on the vendor's site.
GHSA-hwmc-r6mf-jh83 (spatie/schema-org) — CWE-79 /
Patched: `4.0.2` — 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.
❓ What is the problem
**Cross-site scripting (XSS)** (CWE-79) exists in spatie/schema-org.
📍 Affected scope
spatie/schema-org — .
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **4.0.2**.
🛡️ Workaround
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'spatie/schema-org' .` against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response Actions (7 steps)
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'spatie/schema-org' . | 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 `spatie/schema-org` を grep し、稼働しているサービス・バージョンを把握する。
-
6Apply patch patch
Upgrade spatie/schema-org to 4.0.2ステージング環境で 4.0.2 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と、Step 3 で見つけた異常検知の続報チェックを含めること。
-
7Post-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 Step 3 と同じログクエリでアラート再発が無いか継続監視。
Affected packages
composer
spatie/schema-org
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.2"}]}]
References
- web https://github.com/spatie/schema-org/pull/242
- web https://github.com/spatie/schema-org/commit/be389b4759214c11cc1364a16e34a929c5af5a88
- web https://github.com/FriendsOfPHP/security-advisories/blob/master/spatie/schema-org/2026-04-20.yaml
- web https://github.com/spatie/schema-org/releases/tag/4.0.2
- web https://github.com/advisories/GHSA-hwmc-r6mf-jh83