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CVE-2025-48879

CVE-2025-48879 · OctoPrint Vulnerable to Denial of Service through malformed HTTP request

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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 6.5 · Medium · EPSS 0.3% · Fix available

Published
Updated

Stack: python

Affected products and versions

  • octoprint

    Versions
    • < 1.11.2: Affected

    No fix published

  • octoprint PyPI

    Versions
    • 1.10.0
    • 1.10.0rc1
    • 1.10.0rc2
    • 1.10.0rc3
    • 1.10.0rc4
    • 1.10.1
    • 1.10.2
    • 1.10.3
    • 1.11.0
    • 1.11.0rc1
    • 1.11.0rc2
    • 1.11.0rc3
    • 1.11.0rc4
    • 1.11.0rc5
    • 1.11.0rc6
    • 1.11.0rc7
    • 1.11.1
    • 1.3.11
    • 1.3.12
    • 1.3.12rc1
    • 1.3.12rc3
    • 1.4.0
    • 1.4.0rc1
    • 1.4.0rc2
    • 1.4.0rc3
    • 1.4.0rc4
    • 1.4.0rc5
    • 1.4.0rc6
    • 1.4.1
    • 1.4.1rc1
    • 1.4.1rc2
    • 1.4.1rc3
    • 1.4.1rc4
    • 1.4.2
    • 1.5.0
    • 1.5.0rc1
    • 1.5.0rc2
    • 1.5.0rc3
    • 1.5.1
    • 1.5.2
    • 1.5.3
    • 1.6.0
    • 1.6.0rc1
    • 1.6.0rc2
    • 1.6.0rc3
    • 1.6.1
    • 1.7.0
    • 1.7.0rc1
    • 1.7.0rc2
    • 1.7.0rc3
    • 1.7.1
    • 1.7.2
    • 1.7.3
    • 1.8.0
    • 1.8.0rc1
    • 1.8.0rc2
    • 1.8.0rc3
    • 1.8.0rc4
    • 1.8.0rc5
    • 1.8.1
    • 1.8.2
    • 1.8.3
    • 1.8.4
    • 1.8.5
    • 1.8.6
    • 1.8.7
    • 1.9.0
    • 1.9.0rc1
    • 1.9.0rc2
    • 1.9.0rc3
    • 1.9.0rc4
    • 1.9.0rc5
    • 1.9.0rc6
    • 1.9.1
    • 1.9.2
    • 1.9.3
    Affected ranges
    • ECOSYSTEM: < 1.11.2

    Update to 1.11.2

Original sources

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