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CVE-2025-66648
Cross-Site Scripting (XSS) in vega-functions (CVE-2025-66648)
Summary
cross-site scripting in vega-functions (CVE-2025-66648). Risk of unauthorized operations or information disclosure. Exploitable via ``vega.expressionInterpreter``. Mitigation: upgrade to `6.1.1` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2025-66648** has been found in vega-functions.
Attackers can target a specific entry point like ``vega.expressionInterpreter`` over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: ?/10.
What to do: upgrade vega-functions to **6.1.1** or later.
If unsure, ask your IT team or search "vega-functions CVE-2025-66648" on the vendor's site.
CVE-2025-66648 (vega-functions) — CWE-79 /
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: `vega.expressionInterpreter`
Patched: `6.1.1` — 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 vega-functions. Attackers reach the vulnerable code path via ``vega.expressionInterpreter`` without authentication.
📍 Affected scope
vega-functions — . Attack surface: `vega.expressionInterpreter`.
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **6.1.1**.
🛡️ 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 'vega-functions' .` 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 'vega-functions' . | 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 `vega-functions` 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 vega-functions to 6.1.1ステージング環境で 6.1.1 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
vega-functions
[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"6.1.1"}]}]