CVE-2026-54134 | BDVDB-2026-363395 Detail
OctoPrintOctoPrint
Description#
OctoPrint provides a web interface for controlling consumer 3D printers. Prior to 1.11.8 and 2.0.0rc3, OctoPrint's custom Tornado upload handler and Flask with Werkzeug parse request parameters differently, allowing an attacker with FILE_UPLOAD permission to inject reserved internal upload fields through query parameters or parser differentials despite the earlier GHSA-m9jh-jf9h-x3h2 fix. The affected endpoints are /api/files/{local|sdcard}, /api/languages, /plugin/backup/restore, and /plugin/pluginmanager/upload_file. An attacker can make OctoPrint treat an arbitrary host file as a temporary upload, move it into a downloadable upload directory, disclose configuration secrets or other readable files, and remove runtime files in a way that can affect a later restart. This issue is fixed in versions 1.11.8 and 2.0.0rc3.
Impact#
Per CVSS v4.0: confidentiality impact high, integrity impact low, availability impact none. Attack vector: adjacent.
Weaknesses#
- CWE-73 External Control of File Name or Path
References#
- https://github.com/OctoPrint/OctoPrint/security/advisories/GHSA-j4h9-pm27-4rfw
- https://github.com/OctoPrint/OctoPrint/commit/579148beeb6d6e9b3d41b1cf32309b47218ed380
- https://github.com/OctoPrint/OctoPrint/commit/8e3348197db867c30a32d13984f0bd0d664be413
- https://github.com/OctoPrint/OctoPrint/releases/tag/1.11.8
- https://github.com/OctoPrint/OctoPrint/releases/tag/2.0.0rc3
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.