CVE-2026-33033

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-33033", "assignerOrgId": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92", "state": "PUBLISHED", "assignerShortName": "DSF", "dateReserved": "2026-03-17T17:36:23.992Z", "datePublished": "2026-04-07T14:22:48.624Z", "dateUpdated": "2026-04-07T15:21:27.926Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92", "shortName": "DSF", "dateUpdated": "2026-04-07T14:22:48.624Z"}, "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-407", "description": "CWE-407: Inefficient Algorithmic Complexity", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-130", "descriptions": [{"lang": "en", "value": "CAPEC-130: Excessive Allocation"}]}], "title": "Potential denial-of-service vulnerability in MultiPartParser via base64-encoded file upload", "metrics": [{"other": {"content": {"value": "moderate", "namespace": "https://docs.djangoproject.com/en/dev/internals/security/#security-issue-severity-levels"}, "type": "Django severity rating"}}], "descriptions": [{"lang": "en", "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.\n`MultiPartParser` allows remote attackers to degrade performance by submitting multipart uploads with `Content-Transfer-Encoding: base64` including excessive whitespace.\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 Seokchan Yoon for reporting this issue.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30.</p><p>`MultiPartParser` allows remote attackers to degrade performance by submitting multipart uploads with `Content-Transfer-Encoding: base64` including excessive whitespace.</p><p>Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected.</p><p>Django would like to thank Seokchan Yoon for reporting this issue.</p>"}]}], "affected": [{"collectionURL": "https://pypi.org/project/Django/", "defaultStatus": "unaffected", "packageName": "django", "product": "Django", "repo": "https://github.com/django/django/", "vendor": "djangoproject", "versions": [{"status": "affected", "version": "6.0", "lessThan": "6.0.4", "versionType": "semver"}, {"status": "unaffected", "version": "6.0.4", "versionType": "semver"}, {"status": "affected", "version": "5.2", "lessThan": "5.2.13", "versionType": "semver"}, {"status": "unaffected", "version": "5.2.13", "versionType": "semver"}, {"status": "affected", "version": "4.2", "lessThan": "4.2.30", "versionType": "semver"}, {"status": "unaffected", "version": "4.2.30", "versionType": "semver"}]}], "references": [{"url": "https://docs.djangoproject.com/en/dev/releases/security/", "name": "Django security archive", "tags": ["vendor-advisory"]}, {"url": "https://groups.google.com/g/django-announce", "name": "Django releases announcements", "tags": ["mailing-list"]}, {"url": "https://www.djangoproject.com/weblog/2026/apr/07/security-releases/", "name": "Django security releases issued: 6.0.4, 5.2.13, and 4.2.30", "tags": ["vendor-advisory"]}], "credits": [{"lang": "en", "type": "reporter", "value": "Seokchan Yoon"}, {"lang": "en", "type": "remediation developer", "value": "Natalia Bidart"}, {"lang": "en", "type": "coordinator", "value": "Jacob Walls"}], "timeline": [{"lang": "en", "time": "2026-02-19T12:00:00.000Z", "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."}], "datePublic": "2026-04-07T09:00:00.000Z", "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "cvelib 1.8.0"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-04-07T15:21:08.357477Z", "id": "CVE-2026-33033", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-07T15:21:27.926Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2026-33033", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-04-07T15:21:08.357477Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-07T15:21:23.777Z"}}], "cna": {"title": "Potential denial-of-service vulnerability in MultiPartParser via base64-encoded file upload", "source": {"discovery": "EXTERNAL"}, "credits": [{"lang": "en", "type": "reporter", "value": "Seokchan Yoon"}, {"lang": "en", "type": "remediation developer", "value": "Natalia Bidart"}, {"lang": "en", "type": "coordinator", "value": "Jacob Walls"}], "impacts": [{"capecId": "CAPEC-130", "descriptions": [{"lang": "en", "value": "CAPEC-130: Excessive Allocation"}]}], "metrics": [{"other": {"type": "Django severity rating", "content": {"value": "moderate", "namespace": "https://docs.djangoproject.com/en/dev/internals/security/#security-issue-severity-levels"}}}], "affected": [{"repo": "https://github.com/django/django/", "vendor": "djangoproject", "product": "Django", "versions": [{"status": "affected", "version": "6.0", "lessThan": "6.0.4", "versionType": "semver"}, {"status": "unaffected", "version": "6.0.4", "versionType": "semver"}, {"status": "affected", "version": "5.2", "lessThan": "5.2.13", "versionType": "semver"}, {"status": "unaffected", "version": "5.2.13", "versionType": "semver"}, {"status": "affected", "version": "4.2", "lessThan": "4.2.30", "versionType": "semver"}, {"status": "unaffected", "version": "4.2.30", "versionType": "semver"}], "packageName": "django", "collectionURL": "https://pypi.org/project/Django/", "defaultStatus": "unaffected"}], "timeline": [{"lang": "en", "time": "2026-02-19T12:00:00.000Z", "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."}], "datePublic": "2026-04-07T09:00:00.000Z", "references": [{"url": "https://docs.djangoproject.com/en/dev/releases/security/", "name": "Django security archive", "tags": ["vendor-advisory"]}, {"url": "https://groups.google.com/g/django-announce", "name": "Django releases announcements", "tags": ["mailing-list"]}, {"url": "https://www.djangoproject.com/weblog/2026/apr/07/security-releases/", "name": "Django security releases issued: 6.0.4, 5.2.13, and 4.2.30", "tags": ["vendor-advisory"]}], "x_generator": {"engine": "cvelib 1.8.0"}, "descriptions": [{"lang": "en", "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.\n`MultiPartParser` allows remote attackers to degrade performance by submitting multipart uploads with `Content-Transfer-Encoding: base64` including excessive whitespace.\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 Seokchan Yoon for reporting this issue.", "supportingMedia": [{"type": "text/html", "value": "<p>An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30.</p><p>`MultiPartParser` allows remote attackers to degrade performance by submitting multipart uploads with `Content-Transfer-Encoding: base64` including excessive whitespace.</p><p>Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected.</p><p>Django would like to thank Seokchan Yoon for reporting this issue.</p>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-407", "description": "CWE-407: Inefficient Algorithmic Complexity"}]}], "providerMetadata": {"orgId": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92", "shortName": "DSF", "dateUpdated": "2026-04-07T14:22:48.624Z"}}}, "cveMetadata": {"cveId": "CVE-2026-33033", "state": "PUBLISHED", "dateUpdated": "2026-04-07T15:21:27.926Z", "dateReserved": "2026-03-17T17:36:23.992Z", "assignerOrgId": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92", "datePublished": "2026-04-07T14:22:48.624Z", "assignerShortName": "DSF"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"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"}]}], "source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*", "matchCriteriaId": "C78D8198-229F-45A2-B09D-C1D272878E3E", "versionEndExcluding": "4.2.30", "versionStartIncluding": "4.2", "vulnerable": true}, {"criteria": "cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*", "matchCriteriaId": "5ED295FD-7063-40A1-9A3E-C0CC4D6F7BD3", "versionEndExcluding": "5.2.13", "versionStartIncluding": "5.2", "vulnerable": true}, {"criteria": "cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*", "matchCriteriaId": "344A677E-BD67-42F0-9746-5B0D4C53815E", "versionEndExcluding": "6.0.4", "versionStartIncluding": "6.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "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.\n`MultiPartParser` allows remote attackers to degrade performance by submitting multipart uploads with `Content-Transfer-Encoding: base64` including excessive whitespace.\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 Seokchan Yoon for reporting this issue."}, {"lang": "es", "value": "Se descubri\u00f3 un problema en 6.0 anterior a 6.0.4, 5.2 anterior a 5.2.13 y 4.2 anterior a 4.2.30.\n\u2019MultiPartParser\u2019 permite a atacantes remotos degradar el rendimiento mediante el env\u00edo de cargas multipart con \u2019Content-Transfer-Encoding: base64\u2019 que incluyen espacios en blanco excesivos.\nSeries de Django anteriores no compatibles (como 5.0.x, 4.1.x y 3.2.x) no fueron evaluadas y tambi\u00e9n podr\u00edan verse afectadas.\nDjango desea agradecer a Seokchan Yoon por informar sobre este problema."}], "id": "CVE-2026-33033", "lastModified": "2026-10-26T21:10:00.170", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-33033", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-04-07T15:21:08.357477Z", "version": "2.0.3"}}]}, "published": "2026-04-07T15:17:39.220", "references": [{"source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92", "tags": ["Patch", "Vendor Advisory"], "url": "https://docs.djangoproject.com/en/dev/releases/security/"}, {"source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92", "tags": ["Release Notes"], "url": "https://groups.google.com/g/django-announce"}, {"source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92", "tags": ["Patch", "Vendor Advisory"], "url": "https://www.djangoproject.com/weblog/2026/apr/07/security-releases/"}], "sourceIdentifier": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-407"}], "source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92", "type": "Secondary"}]}

{"bugzilla": {"description": "Django: Django: Performance degradation via excessive whitespace in multipart uploads", "id": "2455962", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2455962"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-1286", "details": ["A flaw was found in Django. A remote attacker can exploit this vulnerability by submitting specially crafted multipart uploads that include excessive whitespace within `Content-Transfer-Encoding: base64` data. This can lead to a degradation of performance, effectively causing a Denial of Service (DoS) for the affected system."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2026-33033", "package_state": [{"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Fix deferred", "package_name": "automation-controller", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Fix deferred", "package_name": "redhat-user-workloads/automation-reports", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Fix deferred", "package_name": "redhat-user-workloads/controller-rhel9", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Fix deferred", "package_name": "redhat-user-workloads/eda-controller-rhel9", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Fix deferred", "package_name": "redhat-user-workloads/gateway-rhel9", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Fix deferred", "package_name": "redhat-user-workloads/hub-rhel9", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Fix deferred", "package_name": "redhat-user-workloads/lightspeed-rhel8", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Fix deferred", "package_name": "redhat-user-workloads/lightspeed-rhel9", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Fix deferred", "package_name": "redhat-user-workloads/metrics-service-rhel9", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:discovery:2::el9", "fix_state": "Fix deferred", "package_name": "redhat-user-workloads/discovery-server", "product_name": "Red Hat Discovery 2"}, {"cpe": "cpe:/a:redhat:satellite:6", "fix_state": "Fix deferred", "package_name": "redhat-user-workloads/iop-advisor-backend-sat-6-18", "product_name": "Red Hat Satellite 6"}], "public_date": "2026-04-07T14:22:48Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-33033\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-33033\nhttps://docs.djangoproject.com/en/dev/releases/security/\nhttps://groups.google.com/g/django-announce\nhttps://www.djangoproject.com/weblog/2026/apr/07/security-releases/"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.0,6.0.4)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "6.0.4"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.2,5.2.13)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "5.2.13"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.2,4.2.30)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "4.2.30"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Django", "source": "cna", "vendor": "djangoproject"}, "product": "django", "vendor": "djangoproject"}], "analysis": {"en": {"generated_at": "2026-04-13T18:53:01.079043+00:00", "value": {"mitigation_remediation": ["Upgrade to a fixed Django release (6.0.4 or newer, 5.2.13 or newer, or 4.2.30 or newer).", "If an immediate upgrade is not possible, block or strip base64\u2011encoded multipart uploads with excessive whitespace on all file\u2011upload endpoints.", "Validate the deployment by testing large base64 uploads and monitoring CPU usage to ensure the denial\u2011of\u2011service condition is resolved."], "summary": {"action": "Apply Patch", "impact": "Denial of Service \u2013 performance degradation"}, "threat_synthesis": {"affected_systems": "Affected installations include Django 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. Unsupported series such as 5.0.x, 4.1.x, and 3.2.x were not checked but could also be at risk; site owners should verify their current version and plan an upgrade if necessary.", "description_and_impact": "The Django web framework\u2019s MultiPartParser contains a flaw where base64\u2011encoded file uploads that include excessive whitespace in the Content\u2011Transfer\u2011Encoding header force the parser to perform unnecessary decoding, eating CPU cycles and causing the server to slow down or become unresponsive. This reflects a resource\u2011exhaustion weakness aligned with CWE\u20111286 and CWE\u2011407.", "risk_and_exploitability": "The CVSS score of 6.5 signals moderate severity, while an EPSS below 1% indicates a low likelihood of exploitation. The vulnerability is not listed in the CISA KEV catalog and no public exploits are known. A remote attacker can trigger the issue via an unauthenticated HTTP POST that contains a multipart upload with base64 encoding and large amounts of whitespace in the header."}}}}, "created": "2026-04-08T19:37:34.010132+00:00", "updated": "2026-04-14T16:40:55.927287+00:00", "vendors": ["djangoproject", "djangoproject$PRODUCT$django"]}