OctoPrint provides a web interface for controlling consumer 3D printers. From 2.0.0rc1 until 2.0.0rc7, an authenticated user can supply a crafted default port or baudrate through a connect request to the bundled Serial Connector plugin. OctoPrint persists these values in printerConnection.preferred.parameters.port or printerConnection.preferred.parameters.baudrate and renders them as HTML when another user views the saved connection parameters, allowing script execution in that user's browser and actions within the user's OctoPrint access. This issue is fixed in version 2.0.0rc7.
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Mon, 09 Nov 2026 17:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | OctoPrint provides a web interface for controlling consumer 3D printers. From 2.0.0rc1 until 2.0.0rc7, an authenticated user can supply a crafted default port or baudrate through a connect request to the bundled Serial Connector plugin. OctoPrint persists these values in printerConnection.preferred.parameters.port or printerConnection.preferred.parameters.baudrate and renders them as HTML when another user views the saved connection parameters, allowing script execution in that user's browser and actions within the user's OctoPrint access. This issue is fixed in version 2.0.0rc7. | |
| Title | OctoPrint: Stored XSS via saved connection parameters | |
| Weaknesses | CWE-79 | |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-11-09T17:10:35.399Z
Reserved: 2026-11-05T20:43:10.420Z
Link: CVE-2026-123364
No data.
Status : Deferred
Published: 2026-11-09T17:17:27.333
Modified: 2026-11-09T17:17:27.487
Link: CVE-2026-123364
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OpenCVE Enrichment
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Weaknesses