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: 0.2%CVSS: 4.6Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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
4.6MEDIUMmedium confidence
EG Risk
21
EG Risk 21/100

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%
EPSS PROB
0.2%
EPSS %ILE
8th
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
githubMentions a patch (unverified)

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 rangeFix by version rangeDependents
octoprint1.10.0 ... 2.0.0rc2 (84 versions)
  • every version up to 1.11.8: fixed in 1.11.8
  • 2.0.0rc1 up to 2.0.0rc3: fixed in 2.0.0rc3
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 29× 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. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-08 17:12 UTCEPSS rescore
  3. 2026-10-08 14:35 UTCOSV refresh
  4. 2026-10-07 23:47 UTCEPSS rescore
  5. 2026-10-06 15:17 UTCEPSS rescore
  6. 2026-10-05 17:42 UTCEPSS rescore
  7. 2026-10-04 23:22 UTCEPSS rescore
  8. 2026-10-03 14:25 UTCEPSS rescore
  9. 2026-10-01 19:49 UTCEPSS rescore
  10. 2026-09-30 15:03 UTCEPSS rescore
  11. 2026-09-28 13:51 UTCEPSS rescore
  12. 2026-09-27 13:48 UTCEPSS rescore
  13. 2026-09-26 15:58 UTCEPSS rescore
  14. 2026-09-26 00:26 UTCEPSS rescore
  15. 2026-09-20 20:15 UTCEPSS rescore
  16. 2026-09-18 20:36 UTCEG score recompute
  17. 2026-09-18 19:28 UTCEPSS rescore
  18. 2026-09-18 19:28 UTCEPSS rescore
  19. 2026-09-18 10:28 UTCEG score recompute
  20. 2026-09-17 19:30 UTCEPSS rescore
  21. 2026-09-16 14:08 UTCEPSS rescore
  22. 2026-09-16 05:15 UTCEPSS rescore
  23. 2026-09-15 03:11 UTCEPSS rescore
  24. 2026-09-13 16:47 UTCEPSS rescore
  25. 2026-09-13 12:22 UTCEG score recompute
Show 30 more
  1. 2026-09-12 15:01 UTCEPSS rescore
  2. 2026-09-11 14:53 UTCEPSS rescore
  3. 2026-09-11 09:37 UTCEPSS rescore
  4. 2026-09-10 09:34 UTCEPSS rescore
  5. 2026-09-08 22:00 UTCEPSS rescore
  6. 2026-09-07 16:01 UTCEPSS rescore
  7. 2026-09-06 13:47 UTCEPSS rescore
  8. 2026-09-04 05:06 UTCEPSS rescore
  9. 2026-09-02 14:12 UTCEPSS rescore
  10. 2026-09-01 13:53 UTCEPSS rescore
  11. 2026-09-01 04:39 UTCEPSS rescore
  12. 2026-08-30 20:27 UTCEG score recompute
  13. 2026-08-30 19:17 UTCEPSS rescore
  14. 2026-08-30 01:22 UTCEPSS rescore
  15. 2026-08-28 21:41 UTCEPSS rescore
  16. 2026-08-27 14:25 UTCEPSS rescore
  17. 2026-08-26 14:46 UTCEPSS rescore
  18. 2026-08-25 13:49 UTCEPSS rescore
  19. 2026-08-25 01:35 UTCEG score recompute
  20. 2026-08-24 00:10 UTCEG score recompute
  21. 2026-08-23 00:19 UTCEPSS rescore
  22. 2026-08-21 20:24 UTCEG score recompute
  23. 2026-08-21 19:59 UTCEG score recompute
  24. 2026-08-21 19:24 UTCEG score recompute
  25. 2026-08-21 18:30 UTCEG score recompute▲ 4.60
  26. 2026-08-21 18:29 UTCMITRE cvelistV5CVSS v3 → 4.6 · CVSS v4 → 4.6
  27. 2026-08-02 06:29 UTCEG score recompute
  28. 2026-07-26 15:53 UTCEG score recompute
  29. 2026-07-23 03:10 UTCEG score recompute
  30. 2026-06-23 17:21 UTCEG score recompute

Related CVEs(same product + same CWE)

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 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 0.2% probability of exploitation in the next 30 days (8th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-35163?
CVE-2026-35163 has a CVSS base score of 4.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-35163?
A fix for CVE-2026-35163 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-35163 are linked in the Vendor Advisories panel on this page.

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.

Book a Demo →Browse All CVEs