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CVE-2026-44523
critical
CVSS 10.0
Vulnerability in github.com/enchant97/note-mark/backend (CVE-2026-44523)
Summary
vulnerability in github.com/enchant97/note-mark/backend (CVE-2026-44523). Confidential information can be exposed externally. Exploitable via ``JWT_SECRET``. Mitigation: upgrade to `0.0.0-20260501152247-18b587758667` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-44523** has been found in github.com/enchant97/note-mark/backend.
Attackers can target a specific entry point like ``JWT_SECRET`` over the network to misuse the product.
Confidential information can be exposed externally. CVSS score: 10.0/10.
What to do: upgrade github.com/enchant97/note-mark/backend to **0.0.0-20260501152247-18b587758667** or later.
If unsure, ask your IT team or search "github.com/enchant97/note-mark/backend CVE-2026-44523" on the vendor's site.
CVE-2026-44523 (github.com/enchant97/note-mark/backend) — CWE-326 / CVSS v3 10.0
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: `JWT_SECRET` / `Base64Decoded.UnmarshalText`
Patched: `0.0.0-20260501152247-18b587758667` — 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-326) exists in github.com/enchant97/note-mark/backend. Attackers reach the vulnerable code path via ``JWT_SECRET`` without authentication.
📍 Affected scope
github.com/enchant97/note-mark/backend — . Attack surface: `JWT_SECRET` / `Base64Decoded.UnmarshalText`.
🔥 Severity
Severity: Critical (CVSS 10.0/10). Confidential information can be exposed externally
🔧 How to fix
Update to **0.0.0-20260501152247-18b587758667**.
🛡️ 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 'github.com/enchant97/note-mark/backend' .` 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 'github.com/enchant97/note-mark/backend' . | 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 `github.com/enchant97/note-mark/backend` 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 github.com/enchant97/note-mark/backend to 0.0.0-20260501152247-18b587758667ステージング環境で 0.0.0-20260501152247-18b587758667 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
go
github.com/enchant97/note-mark/backend
[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.0.0-20260501152247-18b587758667"}]}]
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2026-44523
- package https://github.com/enchant97/note-mark
- web https://github.com/enchant97/note-mark/security/advisories/GHSA-q6mh-rqwh-g786
- web https://github.com/enchant97/note-mark/commit/18b58775866776ed400c403dd0ccad68c1fa4802
- web https://github.com/enchant97/note-mark/releases/tag/v0.19.4
- web https://github.com/advisories/GHSA-q6mh-rqwh-g786