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.
CVE-2026-35163
MEDIUMPre-NVD 4.64.6—Trending — 3 sources updated this week
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 97% 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.
- 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 computedSeverity46% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 3%
- KEV
- Not listed
Published
June 23, 2026
Last Modified
August 21, 2026
Advisory Details (5)
Auto-updated Aug 21, 2026Patch 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/2.0.0rc3github_release Patch Available
1.11.8
Patch available: OctoPrint/OctoPrint 1.11.8
https://github.com/OctoPrint/OctoPrint/releases/tag/1.11.8github_commit
commit 6e3db9096f8a (OctoPrint/OctoPrint)
Fix landed in OctoPrint/OctoPrint commit 6e3db9096f8a — awaiting tagged release
https://github.com/OctoPrint/OctoPrint/commit/6e3db9096f8a94f7c2249be24b6d03a7d9c12bc7github_commit
commit 42e0f9863935 (OctoPrint/OctoPrint)
Fix landed in OctoPrint/OctoPrint commit 42e0f9863935 — awaiting tagged release
https://github.com/OctoPrint/OctoPrint/commit/42e0f9863935e136f04ed3c560cb96483a580d1bgithub 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-389hVendor 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)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| octoprint | 1.10.0 ... 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 9× in last 7d / 10× 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.
- 2026-08-25 13:49 UTCEPSS rescore
- 2026-08-25 01:35 UTCEG score recompute
- 2026-08-24 00:10 UTCEG score recompute
- 2026-08-23 00:19 UTCEPSS rescore
- 2026-08-21 20:24 UTCEG score recompute
- 2026-08-21 19:59 UTCEG score recompute
- 2026-08-21 19:24 UTCEG score recompute
- 2026-08-21 18:30 UTCEG score recompute▲ 4.60
- 2026-08-21 18:29 UTCMITRE cvelistV5CVSS v3 → 4.6 · CVSS v4 → 4.6
- 2026-08-02 06:29 UTCEG score recompute
- 2026-07-26 15:53 UTCEG score recompute
- 2026-07-23 03:10 UTCEG score recompute
- 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 August 21, 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 96.5% 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
Is Your Infrastructure Affected by CVE-2026-35163?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.