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

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Critical severity · published Sep 15, 2026

CVE-2026-53459

Bambuddy's authentication fails open on database errors, allowing unauthenticated access to all endpoints

9.3

CVSS

0.8%

EPSS

No

On KEV

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.

Exploitation

Is it being used?

Exploit prediction (EPSS)0.8% · higher than 55% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

BA

bambuddy · maziggy

>= 0.1.6, < 0.2.4.4 · source: vendor

Affected product

BA

bambuddy

maziggy

All bambuddy CVEs

References

https://nvd.nist.gov/vuln/detail/CVE-2026-53459

https://www.cve.org/CVERecord?id=CVE-2026-53459

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/commit/845ad39b19bf99afeea571c6bae09695777e1460

https://github.com/maziggy/bambuddy/releases/tag/v0.2.4.4

https://github.com/maziggy/bambuddy/security/advisories/GHSA-6mf4-q26m-47pv

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