CVE-2026-123364

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-79

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

Published

Nov 9, 2026

Last Modified

Nov 14, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-123337In JetBrains YouTrack before 2026.2.19656 users without upda…3.1
• CVE-2026-123338Out-of-bounds Write vulnerability in Apache DataSketches C++…
• CVE-2026-123339Improper trust of forwarded headers in RouterListener::onKer…2.3
• CVE-2026-123341Adobe Experience Manager is affected by a reflected Cross-Si…5.4
• CVE-2026-123356GROBID is machine learning software for extracting informati…7.5
• CVE-2026-123357GROBID is machine learning software for extracting informati…0
• CVE-2026-123367Thor Vector Graphics (ThorVG) is a production-ready vector g…7.4
• CVE-2026-123368compose-lint is a Docker Compose security linter that identi…2.3
• CVE-2026-123369compose-lint is a Docker Compose security linter that identi…5.3
• CVE-2026-123370compose-lint is a Docker Compose security linter that identi…5.1
• CVE-2026-123371compose-lint is a Docker Compose security linter that identi…2.3
• CVE-2026-123372compose-lint is a Docker Compose security linter that identi…2.3