CVE-2025-48879 – octoprint

Package

Manager: pip
Name: octoprint
Vulnerable Version: >=0 <1.11.2

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

EPSS: 0.00038 pctl0.10226

Details

OctoPrint Vulnerable to Denial of Service through malformed HTTP request in OctoPrint ### Impact 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. This could be used to effectively run a denial of service attack on the OctoPrint server. ### Patches The vulnerability has been patched in version 1.11.2. ### Workaround OctoPrint administrators are once more reminded to not make OctoPrint available on hostile networks (e.g. the internet), regardless of whether this vulnerability is patched or not. ### Details 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 fix adds detection of invalid requests like that and ensures they are handled gracefully with an HTTP 400 Bad Request response. ### Credits This vulnerability was discovered and responsibly disclosed to OctoPrint by Jacopo Tediosi.

Metadata

Created: 2025-06-10T20:14:43Z
Modified: 2025-06-10T20:14:44Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/06/GHSA-9wj4-8h85-pgrw/GHSA-9wj4-8h85-pgrw.json
CWE IDs: ["CWE-140", "CWE-835"]
Alternative ID: GHSA-9wj4-8h85-pgrw
Finding: F027
Auto approve: 1