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GHSA-w94c-4vhp-22gx
Vulnerability in @vitejs/plugin-rsc (GHSA-w94c-4vhp-22gx)
Summary
vulnerability in @vitejs/plugin-rsc (GHSA-w94c-4vhp-22gx). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `0.5.26` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **GHSA-w94c-4vhp-22gx** has been found in @vitejs/plugin-rsc.
Risk of unauthorized operations or information disclosure. CVSS score: ?/10.
What to do: upgrade @vitejs/plugin-rsc to **0.5.26** or later.
If unsure, ask your IT team or search "@vitejs/plugin-rsc GHSA-w94c-4vhp-22gx" on the vendor's site.
GHSA-w94c-4vhp-22gx (@vitejs/plugin-rsc) — CWE-770 /
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: `0.5.26` — 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
**A vulnerability** (CWE-770) exists in @vitejs/plugin-rsc.
📍 Affected scope
@vitejs/plugin-rsc — .
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **0.5.26**.
🛡️ 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 '@vitejs/plugin-rsc' .` 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
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1Identify exposure identify
grep -r '@vitejs/plugin-rsc' . | 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 `@vitejs/plugin-rsc` を grep し、稼働しているサービス・バージョンを把握する。
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6Apply patch patch
Upgrade @vitejs/plugin-rsc to 0.5.26ステージング環境で 0.5.26 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。
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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
npm
@vitejs/plugin-rsc
[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.5.26"}]}]
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2026-23870
- package https://github.com/vitejs/vite-plugin-react
- web https://github.com/vercel/next.js/security/advisories/GHSA-8h8q-6873-q5fj
- web https://github.com/vitejs/vite-plugin-react/security/advisories/GHSA-w94c-4vhp-22gx
- web https://github.com/advisories/GHSA-w94c-4vhp-22gx