{"cve":"CVE-2025-48879","nvd":{"published":"2025-06-10T16:15:41.513","modified":"2026-06-17T09:30:25.317","status":"Analyzed","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_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":6.5},"cwes":["CWE-140","CWE-835"],"references":["https://github.com/OctoPrint/OctoPrint/commit/c9c35c17bd820f19c6b12e6c0359fc0cfdd0c1ec","https://github.com/OctoPrint/OctoPrint/security/advisories/GHSA-9wj4-8h85-pgrw"],"products":["octoprint:octoprint"],"source":"nvd","synced_at":"2026-10-19T22:02:23.998251710+00:00"},"epss":{"cve":"CVE-2025-48879","score":0.00256,"percentile":0.17277,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-9wj4-8h85-pgrw","url":"https://osv.dev/vulnerability/GHSA-9wj4-8h85-pgrw","summary":"OctoPrint Vulnerable to Denial of Service through malformed HTTP request in OctoPrint","modified":"2026-07-07T17:57:29.314500598Z","packages":[{"ecosystem":"PyPI","name":"octoprint","purl":"pkg:pypi/octoprint","ranges":["<1.11.2"],"fixed":["1.11.2"]}]},{"id":"PYSEC-2026-1713","url":"https://osv.dev/vulnerability/PYSEC-2026-1713","summary":"OctoPrint Vulnerable to Denial of Service through malformed HTTP request in OctoPrint","modified":"2026-07-07T17:46:29.832163221Z","packages":[{"ecosystem":"PyPI","name":"octoprint","purl":"pkg:pypi/octoprint","ranges":["<1.11.2"],"fixed":["1.11.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}