OctoPrint is Vulnerable to RCE Attacks via Unsanitized Filename in File Upload
Published Sep 9, 2025 · Updated Nov 3, 2026
Original summary
Normalized public record · Updated Nov 3, 2026
OctoPrint is Vulnerable to RCE Attacks via Unsanitized Filename in File Upload
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
OctoPrint versions up until and including 1.11.2 contain a vulnerability that allows an **authenticated** attacker to upload a file under a specially crafted filename that will allow arbitrary command execution if said filename becomes included in a command defined in a system event handler and said event gets triggered.
Potential impact
OctoPrint versions up until and including 1.11.2 contain a vulnerability that allows an authenticated attacker to upload a file under a specially crafted filename that will allow arbitrary command execution if said filename becomes included in a command defined in a system event handler and said event gets triggered. If no event handlers executing system commands with uploaded filenames as parameters have been configured, this vulnerability does not have an impact.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- MEDIUM
- Confidence
- Not available
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
Record history
Published Sep 9, 2025 · Last refreshed Nov 3, 2026