OctoPrint: XSS in Suppressed Command Notifications

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-35163
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-21 19:17:01 UTC
Updated2026-08-21 20:16:34 UTC
DescriptionOctoPrint provides a web interface for controlling consumer 3D printers. Prior to 1.11.8 and 2.0.0rc3, Suppressed Command notification popups use PNotify rendering for printer-controlled payload.command and payload.message values in src/octoprint/static/js/app/viewmodels/terminal.js without HTML escaping. An attacker who convinces a victim to print a crafted file can inject HTML and JavaScript into the notification, disrupt prints, read information available to the victim including sensitive settings when permitted, or perform actions in the victim's OctoPrint session. This issue is fixed in versions 1.11.8 and 2.0.0rc3.

Risk And Classification

Primary CVSS: v4.0 4.6 MEDIUM from [email protected]

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-80 | CWE-80 CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary4.6MEDIUMCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:L/SI:L/SA:N/E:X/C...
4.0CNADECLARED4.6MEDIUMCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:L/SI:L/SA:N

CVSS v4.0 Breakdown

Attack Vector
Local
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
Active
Confidentiality
Low
Integrity
Low
Availability
Low
Sub Conf.
Low
Sub Integrity
Low
Sub Availability
None

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA OctoPrint OctoPrint affected < 1.11.8 Not specified
CNA OctoPrint OctoPrint affected >= 2.0.0rc1, < 2.0.0rc3 Not specified

References

ReferenceSourceLinkTags
github.com/OctoPrint/OctoPrint/releases/tag/2.0.0rc3 [email protected] github.com
github.com/OctoPrint/OctoPrint/security/advisories/GHSA-p6qx-ghxm-389h [email protected] github.com
github.com/OctoPrint/OctoPrint/commit/6e3db9096f8a94f7c2249be24b6d03a7d9... [email protected] github.com
github.com/OctoPrint/OctoPrint/commit/42e0f9863935e136f04ed3c560cb96483a... [email protected] github.com
github.com/OctoPrint/OctoPrint/releases/tag/1.11.8 [email protected] github.com
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