Bambuddy's authentication fails open on database errors, allowing unauthenticated access to all endpoints
Priority MEDIUM 49CWE-636Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00761 55th percentileScored 2026-11-07
Fix Fixed bambuddy (maziggy): 0.2.4.4
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA bambuddy (maziggy) Fixed in 0.2.4.4
Timeline
- 2026-10-02 Threatist record created from CVE-2026-53459
References
Other 6
- https://github.com/maziggy/bambuddy/security/advisories/GHSA-6mf4-q26m-47pv
- https://github.com/maziggy/bambuddy/commit/845ad39b19bf99afeea571c6bae09695777e1460
- https://github.com/maziggy/bambuddy/blob/449502cc9fc1cec04f06d31512420eac729fd032/backend/app/core/auth.py#L473-L483
- https://github.com/maziggy/bambuddy/blob/449502cc9fc1cec04f06d31512420eac729fd032/backend/app/main.py#L5314-L5316
- https://github.com/maziggy/bambuddy/blob/main/CHANGELOG.md
- https://github.com/maziggy/bambuddy/releases/tag/v0.2.4.4
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences