← Back
CVE-2026-39964
medium
CVSS 5.4
Cross-Site Scripting (XSS) in @typebot.io/js (CVE-2026-39964)
Summary
cross-site scripting in @typebot.io/js (CVE-2026-39964). Risk of unauthorized operations or information disclosure. Exploitable via ``href``. Mitigation: upgrade to `0.10.1` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-39964** has been found in @typebot.io/js.
Attackers can target a specific entry point like ``href`` over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 5.4/10.
What to do: upgrade @typebot.io/js to **0.10.1** or later.
If unsure, ask your IT team or search "@typebot.io/js CVE-2026-39964" on the vendor's site.
CVE-2026-39964 (@typebot.io/js) — CWE-79 / CVSS v3 5.4
Attack vector: remote (network-reachable)
Attack surface: `href` / `ImageBubble.tsx` / `document.domain`
Patched: `0.10.1` — 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 @typebot.io/js. Attackers reach the vulnerable code path via ``href`` without authentication.
📍 Affected scope
@typebot.io/js — . Attack surface: `href` / `ImageBubble.tsx` / `document.domain`.
🔥 Severity
Severity: Medium (CVSS 5.4/10). Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **0.10.1**.
🛡️ 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 '@typebot.io/js' .` 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 '@typebot.io/js' . | 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 `@typebot.io/js` 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 @typebot.io/js to 0.10.1ステージング環境で 0.10.1 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。
-
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
@typebot.io/js
[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.10.1"}]}]