Vulnerability-Lookup

FKIE_CVE-2026-44545

Vulnerability from fkie_nvd - Published: 2026-06-03 14:16 - Updated: 2026-07-22 19:10

Severity

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

Summary

daphne before 4.2.2 did not pass maxFramePayloadSize or maxMessagePayloadSize to Autobahn's WebSocketServerFactory. Because Autobahn defaults both values to 0 (unlimited), an unauthenticated remote attacker could send arbitrarily large WebSocket messages or frames, causing excessive memory consumption and a denial of service.

References

	URL	Tags
	6a34fbeb-21d4-45e7-8e0a-62b95bc12c92	https://github.com/django/daphne/blob/main/CHANGELOG.txt	Release Notes

Impacted products

	Vendor	Product	Version
	djangoproject	daphne	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://pypi.org/project/daphne/",
          "defaultStatus": "unaffected",
          "packageName": "daphne",
          "product": "daphne",
          "repo": "https://github.com/django/daphne/",
          "vendor": "djangoproject",
          "versions": [
            {
              "lessThanOrEqual": "4.2.1",
              "status": "affected",
              "version": "4.2.0",
              "versionType": "python"
            },
            {
              "status": "unaffected",
              "version": "4.2.2",
              "versionType": "python"
            }
          ]
        }
      ],
      "source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:djangoproject:daphne:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "48E446D3-9A77-40A0-A62A-D3F04DF924AB",
              "versionEndExcluding": "4.2.2",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "daphne before 4.2.2 did not pass maxFramePayloadSize or maxMessagePayloadSize to Autobahn\u0027s WebSocketServerFactory. Because Autobahn defaults both values to 0 (unlimited), an unauthenticated remote attacker could send arbitrarily large WebSocket messages or frames, causing excessive memory consumption and a denial of service."
    },
    {
      "lang": "es",
      "value": "daphne antes de la versi\u00f3n 4.2.2 no pasaba maxFramePayloadSize ni maxMessagePayloadSize a la WebSocketServerFactory de Autobahn. Debido a que Autobahn establece ambos valores por defecto en 0 (ilimitado), un atacante remoto no autenticado podr\u00eda enviar mensajes o tramas WebSocket arbitrariamente grandes, causando un consumo excesivo de memoria y una denegaci\u00f3n de servicio."
    }
  ],
  "id": "CVE-2026-44545",
  "lastModified": "2026-07-22T19:10:00.120",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-44545",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-03T15:48:33.527931Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-03T14:16:43.583",
  "references": [
    {
      "source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/django/daphne/blob/main/CHANGELOG.txt"
    }
  ],
  "sourceIdentifier": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ],
      "source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92",
      "type": "Secondary"
    }
  ]
}

CVE-2026-44545 (GCVE-0-2026-44545)

Vulnerability from cvelistv5 – Published: 2026-06-03 13:17 – Updated: 2026-06-03 15:48

Title

Unbounded WebSocket message and frame sizes can cause unauthenticated remote denial of service

Summary

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-03 15:48 UTC

CWE

CWE-770 - (Allocation of Resources Without Limits or Throttling)

Assigner

DSF mitre root

References

1 reference

URL	Tags
https://github.com/django/daphne/blob/main/CHANGE…	release-notes

Impacted products

1 product

Vendor	Product	Version
djangoproject	daphne	Affected: 4.2.0 , ≤ 4.2.1 (python) Unaffected: 4.2.2 (python)

Credits

ParkHyunWoo Carlton Gibson

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-44545",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-03T15:48:33.527931Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-03T15:48:40.018Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pypi.org/project/daphne/",
          "defaultStatus": "unaffected",
          "packageName": "daphne",
          "product": "daphne",
          "repo": "https://github.com/django/daphne/",
          "vendor": "djangoproject",
          "versions": [
            {
              "lessThanOrEqual": "4.2.1",
              "status": "affected",
              "version": "4.2.0",
              "versionType": "python"
            },
            {
              "status": "unaffected",
              "version": "4.2.2",
              "versionType": "python"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "ParkHyunWoo"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Carlton Gibson"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003edaphne before 4.2.2 did not pass maxFramePayloadSize or maxMessagePayloadSize to Autobahn\u0027s WebSocketServerFactory. Because Autobahn defaults both values to 0 (unlimited), an unauthenticated remote attacker could send arbitrarily large WebSocket messages or frames, causing excessive memory consumption and a denial of service.\u003c/p\u003e"
            }
          ],
          "value": "daphne before 4.2.2 did not pass maxFramePayloadSize or maxMessagePayloadSize to Autobahn\u0027s WebSocketServerFactory. Because Autobahn defaults both values to 0 (unlimited), an unauthenticated remote attacker could send arbitrarily large WebSocket messages or frames, causing excessive memory consumption and a denial of service."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-130",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-130: Excessive Allocation"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
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          "descriptions": [
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              "cweId": "CWE-770",
              "description": "CWE-770 (Allocation of Resources Without Limits or Throttling)",
              "lang": "en",
              "type": "CWE"
            }
          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-03T13:17:42.907Z",
        "orgId": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92",
        "shortName": "DSF"
      },
      "references": [
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://github.com/django/daphne/blob/main/CHANGELOG.txt"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "timeline": [
        {
          "lang": "en",
          "time": "2026-04-18T03:00:00.000Z",
          "value": "Initial report received."
        },
        {
          "lang": "en",
          "time": "2026-05-06T03:00:00.000Z",
          "value": "Vulnerability confirmed."
        }
      ],
      "title": "Unbounded WebSocket message and frame sizes can cause unauthenticated remote denial of service",
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92",
    "assignerShortName": "DSF",
    "cveId": "CVE-2026-44545",
    "datePublished": "2026-06-03T13:17:42.907Z",
    "dateReserved": "2026-05-06T20:29:54.084Z",
    "dateUpdated": "2026-06-03T15:48:40.018Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.