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CVE-2026-39852
high
CVSS 8.2
Authentication Bypass in io.quarkus:quarkus-vertx-http (CVE-2026-39852)
Summary
authentication bypass in io.quarkus:quarkus-vertx-http (CVE-2026-39852). Confidential information can be exposed externally. Mitigation: upgrade to `3.35.1.1` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-39852** has been found in io.quarkus:quarkus-vertx-http.
Confidential information can be exposed externally. CVSS score: 8.2/10.
What to do: upgrade io.quarkus:quarkus-vertx-http to **3.35.1.1** or later.
If unsure, ask your IT team or search "io.quarkus:quarkus-vertx-http CVE-2026-39852" on the vendor's site.
CVE-2026-39852 (io.quarkus:quarkus-vertx-http) — CWE-287 / CVSS v3 8.2
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: `3.35.1.1` — 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
**authentication bypass** (CWE-287) exists in io.quarkus:quarkus-vertx-http.
📍 Affected scope
io.quarkus:quarkus-vertx-http — .
🔥 Severity
Severity: High (CVSS 8.2/10). Confidential information can be exposed externally
🔧 How to fix
Update to **3.35.1.1**.
🛡️ 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 'io.quarkus:quarkus-vertx-http' .` 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 'io.quarkus:quarkus-vertx-http' . | 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 `io.quarkus:quarkus-vertx-http` 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 io.quarkus:quarkus-vertx-http to 3.35.1.1ステージング環境で 3.35.1.1 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
maven
io.quarkus:quarkus-vertx-http
[{"type":"ECOSYSTEM","events":[{"introduced":"3.34.0"},{"fixed":"3.35.1.1"}]}]