Vulnerability Description
OctoPrint versions up until and including 1.11.1 contain a vulnerability that allows any unauthenticated attacker to send a manipulated broken multipart/form-data request to OctoPrint and through that make the web server component become unresponsive. The issue can be triggered by a broken multipart/form-data request lacking an end boundary to any of OctoPrint's endpoints implemented through the octoprint.server.util.tornado.UploadStorageFallbackHandler request handler. The request handler will get stuck in an endless busy loop, looking for a part of the request that will never come. As Tornado is single-threaded, that will effectively block the whole web server. The vulnerability has been patched in version 1.11.2.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Octoprint | Octoprint | < 1.11.2 |
Related Weaknesses (CWE)
References
- https://github.com/OctoPrint/OctoPrint/commit/c9c35c17bd820f19c6b12e6c0359fc0cfdPatch
- https://github.com/OctoPrint/OctoPrint/security/advisories/GHSA-9wj4-8h85-pgrwMitigationVendor Advisory
FAQ
What is CVE-2025-48879?
CVE-2025-48879 is a vulnerability with a CVSS score of 6.5 (MEDIUM). OctoPrint versions up until and including 1.11.1 contain a vulnerability that allows any unauthenticated attacker to send a manipulated broken multipart/form-data request to OctoPrint and through that...
How severe is CVE-2025-48879?
CVE-2025-48879 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-48879?
Check the references section above for vendor advisories and patch information. Affected products include: Octoprint Octoprint.