CVE-2026-123364

UNKNOWN 0.0

OctoPrint: Stored XSS via saved connection parameters

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-79
Vendor	octoprint
Product	octoprint
Published	Nov 9, 2026

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Affected Versions

OctoPrint / OctoPrint

>= 2.0.0rc1, < 2.0.0rc7

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/OctoPrint/OctoPrint/security/advisories/GHSA-p623-mxf7-qxjm github.com: https://github.com/OctoPrint/OctoPrint/commit/059495787a1086868a28ba9eca8d089729242646 github.com: https://github.com/OctoPrint/OctoPrint/releases/tag/2.0.0rc7