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CVE-2026-53459— Bambuddy's authentication fails open on database errors, allowing unauthenticated access to all endpoints

Quick assessment

Affected
maziggy bambuddy
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Bambuddy 是一个用于 Bambu Lab 3D 打印机的自托管打印档案与管理系统。从 0.1.6 版本开始，到 0.2.4.4 版本之前，由于认证代码中存在“故障开放”（fail-open）缺陷，攻击者可通过对某个公共端点发起大量请求以耗尽系统资源，导致数据库访问失败，从而绕过身份验证，实现对所有受保护端点的未授权访问。该问题已在 0.2.4.4 版本中修复。

CVSS 9.3 · Critical

Possible ATT&CK Techniques 2 AI

T1559 · Inter-Process Communication T1015

Affected Version Matrix 1

VendorProduct Version RangeStatus
maziggy bambuddy >= 0.1.6, < 0.2.4.4 affected
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I. Basic Information for CVE-2026-53459

Vulnerability Information
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Vulnerability Title
Bambuddy's authentication fails open on database errors, allowing unauthenticated access to all endpoints
Source: CVE Program / CVE List V5
Vulnerability Description
Bambuddy is a self-hosted print archive and management system for Bambu Lab 3D printers. Starting in version 0.1.6 and prior to version 0.2.4.4, a fail-open in the authentication code allows any attacker to bypass authentication by flooding a public endpoint to exhaust resources causing database access to fail, granting unauthenticated access to all protected endpoints. Version 0.2.4.4 patches the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
未能安全地进行程序失效(Failing Open)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
maziggy bambuddy >= 0.1.6, < 0.2.4.4 -

II. Public POCs for CVE-2026-53459

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III. Intelligence Information for CVE-2026-53459

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Patches & Fixes for CVE-2026-53459 (2)

Other References for CVE-2026-53459 (2)

IV. Related Vulnerabilities

Same product: bambuddy
Same vendor: maziggy
Same weakness: CWE-636

V. Comments for CVE-2026-53459

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