Vulnerability-Lookup

CVE-2025-48879 (GCVE-0-2025-48879)

Vulnerability from cvelistv5 – Published: 2025-06-10 15:23 – Updated: 2025-06-10 15:57

Title

OctoPrint Vulnerable to Denial of Service through malformed HTTP request

Summary

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.

Severity ?

6.5 (Medium)


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

CWE

CWE-140 - Improper Neutralization of Delimiters
CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Assigner

GitHub_M

References

URL

Tags

	https://github.com/OctoPrint/OctoPrint/security/a…	x_refsource_CONFIRM
	https://github.com/OctoPrint/OctoPrint/commit/c9c…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	OctoPrint	OctoPrint	Affected: < 1.11.2

Show details on NVD website

JSON

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                "id": "CVE-2025-48879",
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    "dateReserved": "2025-05-27T20:14:34.296Z",
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GHSA-9WJ4-8H85-PGRW

Vulnerability from github – Published: 2025-06-10 20:14 – Updated: 2025-06-10 20:14

Summary

OctoPrint Vulnerable to Denial of Service through malformed HTTP request in OctoPrint

Details

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.

Severity ?

6.5 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "OctoPrint"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.11.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-48879"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-140",
      "CWE-835"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-06-10T20:14:43Z",
    "nvd_published_at": "2025-06-10T16:15:41Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\n\nOctoPrint 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.\n\n### Patches\n\nThe vulnerability has been patched in version 1.11.2.\n\n### Workaround\n\nOctoPrint 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.\n\n### Details\n\nThe issue can be triggered by a broken `multipart/form-data` request lacking an end boundary to any of OctoPrint\u0027s 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.\n\nThe fix adds detection of invalid requests like that and ensures they are handled gracefully with an HTTP 400 Bad Request response.\n\n### Credits\n\nThis vulnerability was discovered and responsibly disclosed to OctoPrint by Jacopo Tediosi.",
  "id": "GHSA-9wj4-8h85-pgrw",
  "modified": "2025-06-10T20:14:44Z",
  "published": "2025-06-10T20:14:43Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/OctoPrint/OctoPrint/security/advisories/GHSA-9wj4-8h85-pgrw"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-48879"
    },
    {
      "type": "WEB",
      "url": "https://github.com/OctoPrint/OctoPrint/commit/c9c35c17bd820f19c6b12e6c0359fc0cfdd0c1ec"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/OctoPrint/OctoPrint"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "OctoPrint Vulnerable to Denial of Service through malformed HTTP request in OctoPrint"
}

FKIE_CVE-2025-48879

Vulnerability from fkie_nvd - Published: 2025-06-10 16:15 - Updated: 2025-08-12 13:32

Severity ?

6.5 (Medium) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/OctoPrint/OctoPrint/commit/c9c35c17bd820f19c6b12e6c0359fc0cfdd0c1ec	Patch
	security-advisories@github.com	https://github.com/OctoPrint/OctoPrint/security/advisories/GHSA-9wj4-8h85-pgrw	Mitigation, Vendor Advisory

Impacted products

	Vendor	Product	Version
	octoprint	octoprint	*

JSON

To clipboard

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:octoprint:octoprint:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B1806AF8-8DCF-4F51-A6F2-8B6B72CC5563",
              "versionEndExcluding": "1.11.2",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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\u0027s 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."
    },
    {
      "lang": "es",
      "value": "Las versiones de OctoPrint hasta la 1.11.1 inclusive contienen una vulnerabilidad que permite a cualquier atacante no autenticado enviar una solicitud multipart/form-data manipulada y rota a OctoPrint, provocando as\u00ed que el componente del servidor web deje de responder. El problema puede desencadenarse por una solicitud multipart/form-data rota que no tenga un l\u00edmite final en ninguno de los endpoints de OctoPrint implementados mediante el controlador de solicitudes octoprint.server.util.tornado.UploadStorageFallbackHandler. El controlador de solicitudes se atascar\u00e1 en un bucle de actividad interminable, buscando una parte de la solicitud que nunca llegar\u00e1. Dado que Tornado es de un solo subproceso, esto bloquear\u00e1 efectivamente todo el servidor web. La vulnerabilidad se ha corregido en la versi\u00f3n 1.11.2."
    }
  ],
  "id": "CVE-2025-48879",
  "lastModified": "2025-08-12T13:32:55.493",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-06-10T16:15:41.513",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/OctoPrint/OctoPrint/commit/c9c35c17bd820f19c6b12e6c0359fc0cfdd0c1ec"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Mitigation",
        "Vendor Advisory"
      ],
      "url": "https://github.com/OctoPrint/OctoPrint/security/advisories/GHSA-9wj4-8h85-pgrw"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-140"
        },
        {
          "lang": "en",
          "value": "CWE-835"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2025-48879 (GCVE-0-2025-48879)

GHSA-9WJ4-8H85-PGRW

Impact

Patches

Workaround

Details

Credits

FKIE_CVE-2025-48879

Tags

Sightings

Nomenclature