CVE-2026-41896— Coolify Webhook HMAC绕过导致未授权部署
Possible ATT&CK Techniques 2AI
T1556 · Modify Authentication Process T1190 · Exploit Public-Facing Application新しい脆弱性情報の通知を購読するログインして購読
I. CVE-2026-41896の基本情報
脆弱性情報
脆弱性についてご質問がありますか？Shenlongの分析が参考になるかご確認ください！
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脆弱性タイトル
Coolify: Unauthenticated Deployment Trigger via Webhook HMAC Bypass with Null Secret
ソース: NVD (National Vulnerability Database)
脆弱性説明
Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.474, the HMAC key is the application's manual_webhook_secret_github field, which is used by Coolify's webhook endpoints to validate incoming requests, is nullable with no default — meaning newly created applications have a null webhook secret. PHP's hash_hmac() function silently coerces a null key to an empty string ''. So when the secret is null, the server computes hash_hmac('sha256', $payload, '') — a deterministic value that any attacker can calculate independently. By sending X-Hub-Signature-256: sha256=<hash_hmac('sha256', payload, '')>, an unauthenticated attacker can forge a valid signature and trigger deployments. This vulnerability is fixed in 4.0.0-beta.474.
ソース: NVD (National Vulnerability Database)
CVSS情報
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
ソース: NVD (National Vulnerability Database)
脆弱性タイプ
认证机制不恰当
ソース: NVD (National Vulnerability Database)
影響を受ける製品
| ベンダー | プロダクト | 影響を受けるバージョン | CPE | 購読 |
|---|---|---|---|---|
| coollabsio | coolify | < 4.0.0-beta.474 | - |
II. CVE-2026-41896の公開POC
| # | POC説明 | ソースリンク | Shenlongリンク |
|---|
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CVE-2026-41896 厂商安全公告 (1)
Same Patch Batch · coollabsio · 2026-06-29 · 5 CVEs total
| CVE-2026-57498 | 9.6 CRITICAL | Coolify Cross-Team IDOR: Livewire Components Accept Unscoped server_id and destination_uui |
| CVE-2026-34597 | 8.8 HIGH | Coolify: Authenticated Host RCE |
| CVE-2026-34594 | 8.8 HIGH | Coolify: Authenticated Remote Code Execution via Command Injection in Destination Network |
| CVE-2026-34592 | 7.7 HIGH | Coolify: Cross-Team IDOR via Unscoped Server and Project Lookups Exposes SSH Keys and Infr |
IV. 関連脆弱性
同じ製品: coolify
- CVE-2026-27957
Coolify: Authenticated RCE via command injection in CA certi - CVE-2026-27956
Coolify: Cross-team application domain enumeration via domai - CVE-2026-27955
Coolify: Command Injection via Single-Quote Breakout in `exe - CVE-2026-27883
Coolify: IDOR in Deployment API - Cross-Team Deployment Info - CVE-2026-27881
Coolify: Cross-team deployment information disclosure via GE
同じベンダー: coollabsio
- CVE-2026-27957
Coolify: Authenticated RCE via command injection in CA certi - CVE-2026-27956
Coolify: Cross-team application domain enumeration via domai - CVE-2026-27955
Coolify: Command Injection via Single-Quote Breakout in `exe - CVE-2026-27883
Coolify: IDOR in Deployment API - Cross-Team Deployment Info - CVE-2026-27881
Coolify: Cross-team deployment information disclosure via GE
同じ弱点: CWE-287
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V. CVE-2026-41896へのコメント
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