CVE-2026-35163

MEDIUMPre-NVD 4.64.6—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 96% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
4.6EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.6Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
4.6
EG Score
4.6(medium)
EG Risk
21(Track)
EG Risk 21/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity46% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

June 23, 2026

Last Modified

September 18, 2026

Advisory Details (5)

Auto-updated Aug 21, 2026
Patch available. Sources: github_release, github, github_commit.
github_release Patch Available

2.0.0rc3

Patch available: OctoPrint/OctoPrint 2.0.0rc3 (pre-release)

https://github.com/OctoPrint/OctoPrint/releases/tag/2.0.0rc3
github_release Patch Available

1.11.8

Patch available: OctoPrint/OctoPrint 1.11.8

https://github.com/OctoPrint/OctoPrint/releases/tag/1.11.8
github_commit

commit 6e3db9096f8a (OctoPrint/OctoPrint)

Fix landed in OctoPrint/OctoPrint commit 6e3db9096f8a — awaiting tagged release

https://github.com/OctoPrint/OctoPrint/commit/6e3db9096f8a94f7c2249be24b6d03a7d9c12bc7
github_commit

commit 42e0f9863935 (OctoPrint/OctoPrint)

Fix landed in OctoPrint/OctoPrint commit 42e0f9863935 — awaiting tagged release

https://github.com/OctoPrint/OctoPrint/commit/42e0f9863935e136f04ed3c560cb96483a580d1b
github Patch Available

XSS in Suppressed Command Notifications · Advisory · OctoPrint/OctoPrint · GitHub

Affected: version 1.11.8 and 2.0.0rc3.

https://github.com/OctoPrint/OctoPrint/security/advisories/GHSA-p6qx-ghxm-389h

Vendor Advisories for CVE-2026-35163(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
octoprint1.10.0 ... 2.0.0rc2 (84 versions)2.0.0rc3—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 36× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-18 20:36 UTCEG score recompute
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 10:28 UTCEG score recompute
  5. 2026-09-17 19:30 UTCEPSS rescore
  6. 2026-09-16 14:08 UTCEPSS rescore
  7. 2026-09-16 05:15 UTCEPSS rescore
  8. 2026-09-15 03:11 UTCEPSS rescore
  9. 2026-09-13 16:47 UTCEPSS rescore
  10. 2026-09-13 12:22 UTCEG score recompute
  11. 2026-09-12 15:01 UTCEPSS rescore
  12. 2026-09-11 14:53 UTCEPSS rescore
  13. 2026-09-11 09:37 UTCEPSS rescore
  14. 2026-09-10 09:34 UTCEPSS rescore
  15. 2026-09-08 22:00 UTCEPSS rescore
  16. 2026-09-07 16:01 UTCEPSS rescore
  17. 2026-09-06 13:47 UTCEPSS rescore
  18. 2026-09-04 05:06 UTCEPSS rescore
  19. 2026-09-02 14:12 UTCEPSS rescore
  20. 2026-09-01 13:53 UTCEPSS rescore
  21. 2026-09-01 04:39 UTCEPSS rescore
  22. 2026-08-30 20:27 UTCEG score recompute
  23. 2026-08-30 19:17 UTCEPSS rescore
  24. 2026-08-30 01:22 UTCEPSS rescore
  25. 2026-08-28 21:41 UTCEPSS rescore
Show 15 more
  1. 2026-08-27 14:25 UTCEPSS rescore
  2. 2026-08-26 14:46 UTCEPSS rescore
  3. 2026-08-25 13:49 UTCEPSS rescore
  4. 2026-08-25 01:35 UTCEG score recompute
  5. 2026-08-24 00:10 UTCEG score recompute
  6. 2026-08-23 00:19 UTCEPSS rescore
  7. 2026-08-21 20:24 UTCEG score recompute
  8. 2026-08-21 19:59 UTCEG score recompute
  9. 2026-08-21 19:24 UTCEG score recompute
  10. 2026-08-21 18:30 UTCEG score recompute▲ 4.60
  11. 2026-08-21 18:29 UTCMITRE cvelistV5CVSS v3 → 4.6 · CVSS v4 → 4.6
  12. 2026-08-02 06:29 UTCEG score recompute
  13. 2026-07-26 15:53 UTCEG score recompute
  14. 2026-07-23 03:10 UTCEG score recompute
  15. 2026-06-23 17:21 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-35163?
CVE-2026-35163 is a medium vulnerability published on June 23, 2026. 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…
When was CVE-2026-35163 disclosed?
CVE-2026-35163 was first published in the National Vulnerability Database on June 23, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-35163 actively exploited?
CVE-2026-35163 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 96.4% of all scored CVEs.
What is the CVSS score of CVE-2026-35163?
CVE-2026-35163 has a CVSS v3 base score of 4.6 (NVD).
How do I remediate CVE-2026-35163?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-35163, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-35163

Explore →

Is Your Infrastructure Affected by CVE-2026-35163?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs