Authentication Bypass in Bambu Lab's Print Archive Management System
CVE-2026-53459

9.3CRITICAL

Key Information:

Vendor

Maziggy

Status
Bambuddy
Vendor
CVE Published:
15 September 2026

What is CVE-2026-53459?

Bambuddy, a self-hosted print archive and management system for Bambu Lab 3D printers, is susceptible to an authentication bypass vulnerability due to a fail-open condition in its authentication system. This flaw, present in versions 0.1.6 through 0.2.4.3, allows attackers to flood a public endpoint, causing resource exhaustion that leads to database access failures. As a result, unauthenticated users may gain access to all protected endpoints. Users are advised to update to version 0.2.4.4, which addresses this serious issue.

Affected Version(s)

bambuddy >= 0.1.6, < 0.2.4.4

References

https://github.com/maziggy/bambuddy/security/advisories/G...
x_refsource_CONFIRM
https://github.com/maziggy/bambuddy/commit/845ad39b19bf99...
x_refsource_MISC
https://github.com/maziggy/bambuddy/blob/449502cc9fc1cec0...
x_refsource_MISC

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.