CVE-2026-53459Bambuddy's authentication fails open on database errors, allowing unauthenticated access to all endpoints
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 9.3 CRITICAL (v4.0, CNA)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
- Weakness (CWE)
- CWE-636, CWE-755
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- Sep 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
maziggy bambuddy maziggy:bambuddy (from the name) | from 0.1.6, < 0.2.4.4 | CNA record |
References
- https://github.com/maziggy/bambuddy/security/advisories/GHSA-6mf4-q26m-47pvx-refsource-confirm
- https://github.com/maziggy/bambuddy/commit/845ad39b19bf99afeea571c6bae09695777e1460x-refsource-misc
- https://github.com/maziggy/bambuddy/blob/449502cc9fc1cec04f06d31512420eac729fd032/backend/app/core/auth.py#L473-L483x-refsource-misc
- https://github.com/maziggy/bambuddy/blob/449502cc9fc1cec04f06d31512420eac729fd032/backend/app/main.py#L5314-L5316x-refsource-misc
- https://github.com/maziggy/bambuddy/blob/main/CHANGELOG.mdx-refsource-misc
- https://github.com/maziggy/bambuddy/releases/tag/v0.2.4.4x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.