{"id":"CVE-2026-53459","aliases":["EUVD-2026-78895","GHSA-6mf4-q26m-47pv"],"status":"published","title":"Bambuddy's authentication fails open on database errors, allowing unauthenticated access to all endpoints","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.","severity":{"version":"4.0","score":9.3,"vector":"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","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00761,"percentile":0.55812,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-636","CWE-755"],"published":"2026-09-15T17:25:27Z","modified":"2026-10-28T02:31:06Z","products":[{"vendor":"maziggy","product":"bambuddy"}],"references":[{"url":"https://github.com/maziggy/bambuddy/security/advisories/GHSA-6mf4-q26m-47pv","tags":["x_refsource_CONFIRM","advisory"]},{"url":"https://github.com/maziggy/bambuddy/commit/845ad39b19bf99afeea571c6bae09695777e1460","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/maziggy/bambuddy/blob/449502cc9fc1cec04f06d31512420eac729fd032/backend/app/core/auth.py#L473-L483","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/maziggy/bambuddy/blob/449502cc9fc1cec04f06d31512420eac729fd032/backend/app/main.py#L5314-L5316","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/maziggy/bambuddy/blob/main/CHANGELOG.md","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/maziggy/bambuddy/releases/tag/v0.2.4.4","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53459.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53459","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-53459","title":"Bambuddy's authentication fails open on database errors, allowing unauthenticated access to all endpoints","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.","status":"published","published":"2026-09-15T17:25:27.247Z","modified":"2026-09-17T16:30:18.884Z","cvss":[{"version":"4.0","score":9.3,"vector":"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","level":"critical","assessor":"cna"}],"cwes":["CWE-636","CWE-755"],"updated_at":"2026-11-02T14:20:00.11477Z"}],"euvd":[{"id":"EUVD-2026-78895","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.","status":"published","published":"2026-09-15T17:25:27Z","modified":"2026-09-17T16:30:18Z","cvss":[{"version":"4.0","score":9.3,"vector":"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","level":"critical"}],"updated_at":"2026-11-02T17:28:11.273554Z"}],"nvd":[{"id":"CVE-2026-53459","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.","status":"published","published":"2026-09-15T18:17:22.12Z","modified":"2026-09-29T19:07:47.037Z","cvss":[{"version":"4.0","score":9.3,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical","assessor":"secondary"}],"cwes":["CWE-636","CWE-755"],"updated_at":"2026-11-02T14:12:47.668237Z"}],"osv":[{"id":"CVE-2026-53459","title":"Bambuddy's authentication fails open on database errors, allowing unauthenticated access to all endpoints","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.","status":"published","published":"2026-09-15T17:25:27.247Z","modified":"2026-10-28T02:31:06.00288767Z","cvss":[{"version":"4.0","score":9.3,"vector":"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","level":"critical"}],"cwes":["CWE-636","CWE-755"],"updated_at":"2026-11-02T15:45:07.787185Z"}]}}