CVE-2026-35163
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.
What this means for your business
- FIRST's prediction model gives it a 0.1% chance of attack attempts being seen in the next 30 days, ranking above 3% of all known flaws.
What to do
- 1Ask your IT team or provider whether any of your systems use the affected product.
- 2If you do, follow the vendor's guidance. No patch reference has been published yet.
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Scoring
- CVSS
- Not yet scored
- CVSS v4
- 4.6
- Weakness
- CWE-80
- Assigned by
- security-advisories@github.com
Dates
- Published
- 2026-08-21
- Last modified
- 2026-09-18
- Sources
- NVD
References
- https://github.com/OctoPrint/OctoPrint/commit/42e0f9863935e136f04ed3c560cb96483a580d1b
- https://github.com/OctoPrint/OctoPrint/commit/6e3db9096f8a94f7c2249be24b6d03a7d9c12bc7
- https://github.com/OctoPrint/OctoPrint/releases/tag/1.11.8
- https://github.com/OctoPrint/OctoPrint/releases/tag/2.0.0rc3
- https://github.com/OctoPrint/OctoPrint/security/advisories/GHSA-p6qx-ghxm-389h