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CVE-2026-45288
critical
CVSS 9.8
Vulnerability in Marten (CVE-2026-45288)
Summary
vulnerability in Marten (CVE-2026-45288). Successful exploitation can lead to full system takeover. Exploitable via ``regConfig``. Mitigation: upgrade to `8.37.0` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-45288** has been found in Marten.
Attackers can target a specific entry point like ``regConfig`` over the network to misuse the product.
Successful exploitation can lead to full system takeover. CVSS score: 9.8/10.
What to do: upgrade Marten to **8.37.0** or later.
If unsure, ask your IT team or search "Marten CVE-2026-45288" on the vendor's site.
CVE-2026-45288 (Marten) — CWE-74 / CVSS v3 9.8
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: `regConfig` / `PlainTextSearch` / `PhraseSearch` / `WebStyleSearch`
Patched: `8.37.0` — 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-74) exists in Marten. Attackers reach the vulnerable code path via ``regConfig`` without authentication.
📍 Affected scope
Marten — . Attack surface: `regConfig` / `PlainTextSearch` / `PhraseSearch` / `WebStyleSearch`.
🔥 Severity
Severity: Critical (CVSS 9.8/10). Successful exploitation can lead to full system takeover
🔧 How to fix
Update to **8.37.0**.
🛡️ 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 'Marten' .` 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 'Marten' . | 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 `Marten` 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 Marten to 8.37.0ステージング環境で 8.37.0 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
nuget
Marten
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.37.0"}]}]
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2026-45288
- package https://github.com/JasperFx/marten
- web https://github.com/JasperFx/marten/security/advisories/GHSA-vmw2-qwm8-x84c
- web https://github.com/JasperFx/marten/pull/4343
- web https://github.com/JasperFx/marten/commit/626249656829860b9c55895b5b6046b61a2a695f
- web https://github.com/advisories/GHSA-vmw2-qwm8-x84c