Vulnerability-Lookup

GHSA-933H-HP56-HF7M

Vulnerability from github – Published: 2026-04-07 15:30 – Updated: 2026-06-05 17:51

Summary

Django: SGI requests with a missing or understated `Content-Length` header could bypass the `DATA_UPLOAD_MAX_MEMORY_SIZE` limit

Details

Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected. Django would like to thank Superior for reporting this issue.

Severity

7.5 (High)


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

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "Django"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.0"
            },
            {
              "fixed": "6.0.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "Django"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.2"
            },
            {
              "fixed": "5.2.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "Django"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.2"
            },
            {
              "fixed": "4.2.30"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-33034"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-770"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-08T15:29:09Z",
    "nvd_published_at": "2026-04-07T15:17:39Z",
    "severity": "HIGH"
  },
  "details": "An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. ASGI requests with a missing or understated `Content-Length` header could bypass the `DATA_UPLOAD_MAX_MEMORY_SIZE` limit when reading `HttpRequest.body`, allowing remote attackers to load an unbounded request body into memory.\n\nEarlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected.\nDjango would like to thank Superior for reporting this issue.",
  "id": "GHSA-933h-hp56-hf7m",
  "modified": "2026-06-05T17:51:42Z",
  "published": "2026-04-07T15:30:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33034"
    },
    {
      "type": "WEB",
      "url": "https://docs.djangoproject.com/en/dev/releases/security"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/django/django"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2026-49.yaml"
    },
    {
      "type": "WEB",
      "url": "https://groups.google.com/g/django-announce"
    },
    {
      "type": "WEB",
      "url": "https://www.djangoproject.com/weblog/2026/apr/07/security-releases"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Django: SGI requests with a missing or understated `Content-Length` header could bypass the `DATA_UPLOAD_MAX_MEMORY_SIZE` limit"
}

CVE-2026-33034 (GCVE-0-2026-33034)

Vulnerability from cvelistv5 – Published: 2026-04-07 14:22 – Updated: 2026-04-07 20:44

Title

Potential denial-of-service vulnerability in ASGI requests via memory upload limit bypass

Summary

An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. ASGI requests with a missing or understated `Content-Length` header could bypass the `DATA_UPLOAD_MAX_MEMORY_SIZE` limit when reading `HttpRequest.body`, allowing remote attackers to load an unbounded request body into memory. Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected. Django would like to thank Superior for reporting this issue.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-07 20:43 UTC

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

DSF mitre root

References

3 references

URL	Tags
https://docs.djangoproject.com/en/dev/releases/se…	vendor-advisory
https://groups.google.com/g/django-announce	mailing-list
https://www.djangoproject.com/weblog/2026/apr/07/…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
djangoproject	Django	Affected: 6.0 , < 6.0.4 (semver) Unaffected: 6.0.4 (semver) Affected: 5.2 , < 5.2.13 (semver) Unaffected: 5.2.13 (semver) Affected: 4.2 , < 4.2.30 (semver) Unaffected: 4.2.30 (semver)

Date Public

2026-04-07 09:00

Credits

Superior Natalia Bidart Jacob Walls

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "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"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-33034",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-07T20:43:43.119514Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-07T20:44:01.819Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pypi.org/project/Django/",
          "defaultStatus": "unaffected",
          "packageName": "django",
          "product": "Django",
          "repo": "https://github.com/django/django/",
          "vendor": "djangoproject",
          "versions": [
            {
              "lessThan": "6.0.4",
              "status": "affected",
              "version": "6.0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.0.4",
              "versionType": "semver"
            },
            {
              "lessThan": "5.2.13",
              "status": "affected",
              "version": "5.2",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.2.13",
              "versionType": "semver"
            },
            {
              "lessThan": "4.2.30",
              "status": "affected",
              "version": "4.2",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "4.2.30",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Superior"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Natalia Bidart"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "Jacob Walls"
        }
      ],
      "datePublic": "2026-04-07T09:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eAn issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30.\u003c/p\u003e\u003cp\u003eASGI requests with a missing or understated `Content-Length` header could\u003c/p\u003e\u003cp\u003ebypass the `DATA_UPLOAD_MAX_MEMORY_SIZE` limit when reading\u003c/p\u003e\u003cp\u003e`HttpRequest.body`, allowing remote attackers to load an unbounded request body into\u003c/p\u003e\u003cp\u003ememory.\u003c/p\u003e\u003cp\u003eEarlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected.\u003c/p\u003e\u003cp\u003eDjango would like to thank Superior for reporting this issue.\u003c/p\u003e"
            }
          ],
          "value": "An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30.\nASGI requests with a missing or understated `Content-Length` header could\r\nbypass the `DATA_UPLOAD_MAX_MEMORY_SIZE` limit when reading\r\n`HttpRequest.body`, allowing remote attackers to load an unbounded request body into\r\nmemory.\nEarlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected.\nDjango would like to thank Superior for reporting this issue."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-130",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-130: Excessive Allocation"
            }
          ]
        }
      ],
      "metrics": [
        {
          "other": {
            "content": {
              "namespace": "https://docs.djangoproject.com/en/dev/internals/security/#security-issue-severity-levels",
              "value": "low"
            },
            "type": "Django severity rating"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-770",
              "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-07T14:22:59.942Z",
        "orgId": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92",
        "shortName": "DSF"
      },
      "references": [
        {
          "name": "Django security archive",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://docs.djangoproject.com/en/dev/releases/security/"
        },
        {
          "name": "Django releases announcements",
          "tags": [
            "mailing-list"
          ],
          "url": "https://groups.google.com/g/django-announce"
        },
        {
          "name": "Django security releases issued: 6.0.4, 5.2.13, and 4.2.30",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.djangoproject.com/weblog/2026/apr/07/security-releases/"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "timeline": [
        {
          "lang": "en",
          "time": "2026-02-24T12:00:00.000Z",
          "value": "Initial report received."
        },
        {
          "lang": "en",
          "time": "2026-03-17T12:00:00.000Z",
          "value": "Vulnerability confirmed."
        },
        {
          "lang": "en",
          "time": "2026-04-07T09:00:00.000Z",
          "value": "Security release issued."
        }
      ],
      "title": "Potential denial-of-service vulnerability in ASGI requests via memory upload limit bypass",
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92",
    "assignerShortName": "DSF",
    "cveId": "CVE-2026-33034",
    "datePublished": "2026-04-07T14:22:59.942Z",
    "dateReserved": "2026-03-17T17:36:23.992Z",
    "dateUpdated": "2026-04-07T20:44:01.819Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

PYSEC-2026-49

Vulnerability from pysec - Published: 2026-04-07 15:17 - Updated: 2026-05-20 09:18

Details

An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. ASGI requests with a missing or understated Content-Length header could bypass the DATA_UPLOAD_MAX_MEMORY_SIZE limit when reading HttpRequest.body, allowing remote attackers to load an unbounded request body into memory. Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected. Django would like to thank Superior for reporting this issue.

Severity

7.5 (High)


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

Impacted products

Name	purl
django	pkg:pypi/django

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "django",
        "purl": "pkg:pypi/django"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.2"
            },
            {
              "fixed": "4.2.30"
            },
            {
              "introduced": "5.2"
            },
            {
              "fixed": "5.2.13"
            },
            {
              "introduced": "6.0"
            },
            {
              "fixed": "6.0.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.2",
        "4.2.1",
        "4.2.10",
        "4.2.11",
        "4.2.12",
        "4.2.13",
        "4.2.14",
        "4.2.15",
        "4.2.16",
        "4.2.17",
        "4.2.18",
        "4.2.19",
        "4.2.2",
        "4.2.20",
        "4.2.21",
        "4.2.22",
        "4.2.23",
        "4.2.24",
        "4.2.25",
        "4.2.26",
        "4.2.27",
        "4.2.28",
        "4.2.29",
        "4.2.3",
        "4.2.4",
        "4.2.5",
        "4.2.6",
        "4.2.7",
        "4.2.8",
        "4.2.9",
        "5.2",
        "5.2.1",
        "5.2.10",
        "5.2.11",
        "5.2.12",
        "5.2.2",
        "5.2.3",
        "5.2.4",
        "5.2.5",
        "5.2.6",
        "5.2.7",
        "5.2.8",
        "5.2.9",
        "6.0",
        "6.0.1",
        "6.0.2",
        "6.0.3"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-33034",
    "GHSA-933h-hp56-hf7m"
  ],
  "details": "An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30.\nASGI requests with a missing or understated `Content-Length` header could\nbypass the `DATA_UPLOAD_MAX_MEMORY_SIZE` limit when reading\n`HttpRequest.body`, allowing remote attackers to load an unbounded request body into\nmemory.\nEarlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected.\nDjango would like to thank Superior for reporting this issue.",
  "id": "PYSEC-2026-49",
  "modified": "2026-05-20T09:18:58.754854Z",
  "published": "2026-04-07T15:17:39.393Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://groups.google.com/g/django-announce"
    },
    {
      "type": "FIX",
      "url": "https://docs.djangoproject.com/en/dev/releases/security/"
    },
    {
      "type": "FIX",
      "url": "https://www.djangoproject.com/weblog/2026/apr/07/security-releases/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-933h-hp56-hf7m"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

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.

Action not permitted

GHSA-933H-HP56-HF7M

CVE-2026-33034 (GCVE-0-2026-33034)

PYSEC-2026-49

Tags

Sightings

Nomenclature

Related by attack behaviour