{"id":"CVE-2026-53459","summary":"Bambuddy's authentication fails open on database errors, allowing unauthenticated access to all endpoints","details":"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.","aliases":["GHSA-6mf4-q26m-47pv"],"modified":"2026-09-16T03:47:14.990046157Z","published":"2026-09-15T17:25:27.247Z","database_specific":{"cwe_ids":["CWE-636","CWE-755"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53459.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53459.json"},{"type":"WEB","url":"https://github.com/maziggy/bambuddy/blob/449502cc9fc1cec04f06d31512420eac729fd032/backend/app/core/auth.py#L473-L483"},{"type":"WEB","url":"https://github.com/maziggy/bambuddy/blob/449502cc9fc1cec04f06d31512420eac729fd032/backend/app/main.py#L5314-L5316"},{"type":"WEB","url":"https://github.com/maziggy/bambuddy/blob/main/CHANGELOG.md"},{"type":"FIX","url":"https://github.com/maziggy/bambuddy/commit/845ad39b19bf99afeea571c6bae09695777e1460"},{"type":"WEB","url":"https://github.com/maziggy/bambuddy/releases/tag/v0.2.4.4"},{"type":"ADVISORY","url":"https://github.com/maziggy/bambuddy/security/advisories/GHSA-6mf4-q26m-47pv"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53459"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/maziggy/bambuddy","events":[{"introduced":"ee704b41580925a2c6895c20e4b1ec25d8bc8ac4"},{"fixed":"0967f9758bf806131a3fcde54aa054c9b31e0ad7"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"0.1.6"},{"fixed":"0.2.4.4"}]}}],"versions":["v0.2.4.3","v0.2.4.2","v0.2.4.1","v0.2.4","v0.2.4b3","v0.2.4b1","v0.2.3.2","v0.2.3.1","v0.2.3","v0.2.2.2","v0.2.2.1","v0.2.2","v0.2.2b3","v0.2.2-b2","v0.2.1.1","v0.2.1","v0.2.1b3","v0.2.0","v0.1.9","v0.1.8.1","v0.1.8","v0.1.7","v0.1.6.2","v0.1.6.1","v0.1.6-hotfix","v0.1.6","v0.1.6b11","v0.1.6b10","v0.1.6b9","v0.1.6b8","v0.1.6b7","v0.1.6b6","v0.1.6b5","v0.1.6b4","v0.1.6b3","v0.1.6b2","v0.1.6b"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53459.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}