CVE-2026-35163 json
OctoPrint: XSS in Suppressed Command Notifications
published 2026-06-23 4 mo ago modified 2026-10-14 25 d ago also EUVD-2026-64043 , GHSA-p6qx-ghxm-389h , PYSEC-2026-2688
- cvss
- 4.6
- version 4.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 9%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- pypi octoprint 1.11.8, 2.0.0rc3
- octoprint octoprint 1.11.8, 2.0.0rc3
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.20% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 4.6 | 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 |
| CNA | 4.0 | 4.6 | 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 |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | octoprint | <1.11.8 >=2.0.0rc1, <2.0.0rc3 |
1.11.8 2.0.0rc3 |
Affected products
- OctoPrint OctoPrint
Classification
- Weakness
-
- CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page
References
- github.com /OctoPrint/OctoPrint/commit/42e0f9863935e136f04ed3c560cb96483a580d1b
- github.com /OctoPrint/OctoPrint/commit/6e3db9096f8a94f7c2249be24b6d03a7d9c12bc7
-
github.com
/OctoPrint/OctoPrint/security/advisories/GHSA-p6qx-ghxm-389h
web
- github.com /OctoPrint/OctoPrint/releases/tag/1.11.8
- github.com /OctoPrint/OctoPrint/releases/tag/2.0.0rc3
-
nvd.nist.gov
/vuln/detail/CVE-2026-35163
advisory
-
github.com
/OctoPrint/OctoPrint
package
-
github.com
/pypa/advisory-database/tree/main/vulns/octoprint/PYSEC-2026-2688.yaml
web
-
pypi.org
/project/octoprint
package
-
github.com
/advisories/GHSA-p6qx-ghxm-389h
advisory
Sources
- CVE List CVE-2026-35163
- GitHub Advisory GHSA-p6qx-ghxm-389h
- NVD CVE-2026-35163
- OSV PYSEC-2026-2688
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.