CVE-2026-25673

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Hat Ansible Automation Platform 2", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:ansible_automation_platform:2"], "defaultStatus": "unaffected", "packageName": "ansible-automation-platform-26/gateway-rhel9", "product": "Red Hat Ansible Automation Platform 2", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:ansible_automation_platform:2"], "defaultStatus": "unaffected", "packageName": "ansible-automation-platform-26/hub-rhel9", "product": "Red Hat Ansible Automation Platform 2", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:ansible_automation_platform:2"], "defaultStatus": "unaffected", "packageName": "ansible-automation-platform-26/lightspeed-rhel9", "product": "Red Hat Ansible Automation Platform 2", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:ansible_automation_platform:2"], "defaultStatus": "unaffected", "packageName": "ansible-automation-platform/automation-dashboard-rhel9", "product": "Red Hat Ansible Automation Platform 2", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:ansible_automation_platform:2"], "defaultStatus": "unaffected", "packageName": "ansible-automation-platform-tech-preview/automation-dashboard-rhel9", "product": "Red Hat Ansible Automation Platform 2", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:ansible_automation_platform:2"], "defaultStatus": "unaffected", "packageName": "automation-controller", "product": "Red Hat Ansible Automation Platform 2", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:discovery:2::el9"], "defaultStatus": "unaffected", "packageName": "discovery/discovery-server-rhel9", "product": "Red Hat Discovery 2", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:satellite:6"], "defaultStatus": "unaffected", "packageName": "satellite/iop-advisor-backend-rhel9", "product": "Red Hat Satellite 6", "vendor": "Red Hat"}], "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*", "matchCriteriaId": "DE181B32-2EF8-4AF0-8500-AFF78A7787B5", "versionEndExcluding": "4.2.29", "versionStartIncluding": "4.2.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*", "matchCriteriaId": "91187FB5-19CD-4A7D-B61B-9BE8374164EA", "versionEndExcluding": "5.2.12", "versionStartIncluding": "5.2", "vulnerable": true}, {"criteria": "cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*", "matchCriteriaId": "6AAF6F95-4E20-4A81-832F-D0E29F7E158E", "versionEndExcluding": "6.0.3", "versionStartIncluding": "6.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An issue was discovered in 6.0 before 6.0.3, 5.2 before 5.2.12, and 4.2 before 4.2.29.\n`URLField.to_python()` in Django calls `urllib.parse.urlsplit()`, which performs NFKC normalization on Windows that is disproportionately slow for certain Unicode characters, allowing a remote attacker to cause denial of service via large URL inputs containing these characters.\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 6.0.3, 5.2 anterior a 5.2.12, y 4.2 anterior a 4.2.29.\n`URLField.to_python()` en Django llama a `urllib.parse.urlsplit()`, que realiza la normalizaci\u00f3n NFKC en Windows, la cual es desproporcionadamente lenta para ciertos caracteres Unicode, permitiendo a un atacante remoto causar denegaci\u00f3n de servicio a trav\u00e9s de grandes entradas de URL que contienen estos caracteres.\nSeries de Django anteriores y no compatibles (como 5.0.x, 4.1.x y 3.2.x) no fueron evaluadas y tambi\u00e9n podr\u00edan estar afectadas.\nDjango desea agradecer a Seokchan Yoon por informar sobre este problema."}], "id": "CVE-2026-25673", "lastModified": "2026-07-15T02:18:56.320", "metrics": {"cvssMetricV31": [{"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": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "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": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-25673", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-03T15:25:53.980126Z", "version": "2.0.3"}}]}, "published": "2026-03-03T15:16:19.103", "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/mar/03/security-releases/"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/security/cve/CVE-2026-25673"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2444115"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-25673.json"}], "sourceIdentifier": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}], "source": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-770"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-770"}], "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}]}

{"bugzilla": {"description": "django: Django: Denial of Service via slow URL normalization on Windows", "id": "2444115", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2444115"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-770", "details": ["An issue was discovered in 6.0 before 6.0.3, 5.2 before 5.2.12, and 4.2 before 4.2.29.\n`URLField.to_python()` in Django calls `urllib.parse.urlsplit()`, which performs NFKC normalization on Windows that is disproportionately slow for certain Unicode characters, allowing a remote attacker to cause denial of service via large URL inputs containing these characters.\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.", "A flaw was found in Django. A remote attacker can exploit a vulnerability in the `URLField.to_python()` function, specifically when Django is running on the Windows platform. This function, which utilizes `urllib.parse.urlsplit()`, performs a disproportionately slow normalization process for certain Unicode characters. By submitting large URL inputs containing these characters, an attacker can trigger a denial of service (DoS)."], "name": "CVE-2026-25673", "package_state": [{"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Not affected", "package_name": "ansible-automation-platform-24/lightspeed-rhel8", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Not affected", "package_name": "ansible-automation-platform-25/lightspeed-rhel8", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Not affected", "package_name": "ansible-automation-platform-26/controller-rhel9", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Not affected", "package_name": "ansible-automation-platform-26/eda-controller-rhel9", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Not affected", "package_name": "ansible-automation-platform-26/gateway-rhel9", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Not affected", "package_name": "ansible-automation-platform-26/hub-rhel9", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Not affected", "package_name": "ansible-automation-platform-26/lightspeed-rhel9", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Not affected", "package_name": "ansible-automation-platform/automation-dashboard-rhel9", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Not affected", "package_name": "ansible-automation-platform-tech-preview/automation-dashboard-rhel9", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Not affected", "package_name": "automation-controller", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:discovery:2::el9", "fix_state": "Not affected", "package_name": "discovery/discovery-server-rhel9", "product_name": "Red Hat Discovery 2"}, {"cpe": "cpe:/a:redhat:satellite:6", "fix_state": "Not affected", "package_name": "satellite/iop-advisor-backend-rhel9", "product_name": "Red Hat Satellite 6"}], "public_date": "2026-03-03T14:28:28Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-25673\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-25673\nhttps://docs.djangoproject.com/en/dev/releases/security/\nhttps://groups.google.com/g/django-announce\nhttps://www.djangoproject.com/weblog/2026/mar/03/security-releases/"], "statement": "This flaw only affects Django running on the Windows platform. As such, Red Hat software is unaffected.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.0,6.0.3)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "6.0.3"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.2,5.2.12)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "5.2.12"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.2,4.2.29)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "4.2.29"}}], "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": "2026-04-16T14:04:37.274139+00:00", "value": {"mitigation_remediation": ["Upgrade Django to a fixed release \u2013 6.0.3 or later, 5.2.12 or later, or 4.2.29 or later \u2013 depending on your current version.", "When upgrading is not immediately possible, limit the maximum length or complexity of URLs accepted by the application\u2019s URLField and reject URLs that contain excessive Unicode sequences.", "Apply request throttling or rate limiting at the application or web\u2011server layer to reduce the impact of a DoS attempt."], "summary": {"action": "Patch", "impact": "Denial of Service over Windows via Unicode normalization"}, "threat_synthesis": {"affected_systems": "The affected product is Django, specifically versions 6.0 before 6.0.3, 5.2 before 5.2.12, and 4.2 before 4.2.29. Earlier unsupported releases such as 5.0.x, 4.1.x and 3.2.x were not evaluated and may also be at risk.", "description_and_impact": "The vulnerable URLField method in Django calls Python's urllib.parse.urlsplit, which applies NFKC normalization when running on Windows. For certain Unicode characters this normalization is disproportionately slow, allowing a remote attacker to submit a very large URL that consumes excessive CPU time and memory, leading to denial of service. The flaw maps to CWE\u2011400 (Uncontrolled Resource Consumption) and CWE\u2011770 (Uncontrolled Resource Consumption).", "risk_and_exploitability": "The CVSS base score of 7.5 indicates high severity. The EPSS score of <1% suggests a low probability of exploitation as of the time of analysis, and the vulnerability is not included in the CISA KEV catalog. Exploitation requires an attacker to send a crafted URL that triggers the slow normalization on a Windows server running Django; the attack vector is remote over the network, inferred from the description."}}}}, "created": "2026-03-04T14:54:19.240908+00:00", "updated": "2026-04-16T14:15:28.802517+00:00", "vendors": ["djangoproject", "djangoproject$PRODUCT$django"]}