← Back
CVE-2026-49471
high
CVSS 8.3
Vulnerability in serena-agent (CVE-2026-49471)
Summary
vulnerability in serena-agent (CVE-2026-49471). Successful exploitation can lead to full system takeover. Exploitable via `Host header`. Mitigation: upgrade to `1.5.2` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-49471** has been found in serena-agent.
Attackers can target a specific entry point like `Host header` over the network to misuse the product.
Successful exploitation can lead to full system takeover. CVSS score: 8.3/10.
What to do: upgrade serena-agent to **1.5.2** or later.
If unsure, ask your IT team or search "serena-agent CVE-2026-49471" on the vendor's site.
CVE-2026-49471 (serena-agent) — CWE-306 / CVSS v3 8.3
Attack vector: remote (network-reachable) / unauthenticated
Attack surface: Host header / `constants.py` / `execute_shell_command` / `Host`
Patched: `1.5.2` — 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
**A vulnerability** (CWE-306) exists in serena-agent. Attackers reach the vulnerable code path via `Host header` without authentication.
📍 Affected scope
serena-agent — . Attack surface: Host header / `constants.py` / `execute_shell_command` / `Host`.
🔥 Severity
Severity: High (CVSS 8.3/10). Successful exploitation can lead to full system takeover
🔧 How to fix
Update to **1.5.2**.
🛡️ 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 'serena-agent' .` 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 'serena-agent' . | 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 `serena-agent` 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 serena-agent to 1.5.2ステージング環境で 1.5.2 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
pip
serena-agent
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.2"}]}]