Medium 4.6Published Aug 21, 2026

CVE-2026-35163OctoPrint: XSS in Suppressed Command Notifications

Updated under an hour ago (2026-10-19 09:50 UTC)

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Every CVE for OctoPrint

Exploited in the last 30 days

OctoPrint 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.

CVSS: 4.6 MEDIUM (v4.0, CNA)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
Weakness (CWE): CWE-80
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Aug 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

OctoPrint OctoPrint octoprint:octoprint (from the name)	before 1.11.8; from 2.0.0rc1, < 2.0.0rc3	CNA record

References

https://github.com/OctoPrint/OctoPrint/security/advisories/GHSA-p6qx-ghxm-389hx-refsource-confirm
https://github.com/OctoPrint/OctoPrint/commit/42e0f9863935e136f04ed3c560cb96483a580d1bx-refsource-misc
https://github.com/OctoPrint/OctoPrint/commit/6e3db9096f8a94f7c2249be24b6d03a7d9c12bc7x-refsource-misc
https://github.com/OctoPrint/OctoPrint/releases/tag/1.11.8x-refsource-misc
https://github.com/OctoPrint/OctoPrint/releases/tag/2.0.0rc3x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.