CVE-2026-53459CWE-636CWE-755

CVE-2026-53459

published September 15, 2026

CVSS
9.3
EPSS
1%
Percentile
54.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
9.3 · NONE
CVSS v4.0
9.3 · 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
EPSS
0.00761 · 54.8th percentile
Weaknesses
CWE-636 · Not Failing Securely ('Failing Open'); CWE-755 · Improper Handling of Exceptional Conditions
Published
2026-09-15T22:17Z
References (6)
https://github.com/maziggy/bambuddy/blob/449502cc9fc1cec04f06d31512420eac729fd032/backend/app/core/auth.py#L473-L483 · [email protected]https://github.com/maziggy/bambuddy/blob/449502cc9fc1cec04f06d31512420eac729fd032/backend/app/main.py#L5314-L5316 · [email protected]https://github.com/maziggy/bambuddy/blob/main/CHANGELOG.md · [email protected]https://github.com/maziggy/bambuddy/commit/845ad39b19bf99afeea571c6bae09695777e1460 · [email protected]https://github.com/maziggy/bambuddy/releases/tag/v0.2.4.4 · [email protected]https://github.com/maziggy/bambuddy/security/advisories/GHSA-6mf4-q26m-47pv · [email protected]
EPSS history
Timeline
  • 17 SEP 03:31Z
    EPSS moved — → 0%
    epss
  • 15 SEP 17:25Z
    Bambuddy's authentication fails open on database errors, allowing unauthenticated access to all endpoints
    cvelistv5