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        "assignerOrgId": "28c92f92-d60d-412d-b760-e73465c3df22",
        "state": "PUBLISHED",
        "assignerShortName": "PSF",
        "dateReserved": "2025-12-29T21:04:54.816Z",
        "datePublished": "2026-01-20T21:35:13.865Z",
        "dateUpdated": "2026-03-03T14:42:00.488Z"
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                    "defaultStatus": "unaffected",
                    "modules": [
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                    "repo": "https://github.com/python/cpython",
                    "vendor": "Python Software Foundation",
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                            "version": "0",
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                            "versionType": "python"
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            "credits": [
                {
                    "lang": "en",
                    "type": "reporter",
                    "value": "Omar M. Hasan"
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                            "base64": false,
                            "type": "text/html",
                            "value": "User-controlled data URLs parsed by urllib.request.DataHandler allow injecting headers through newlines in the data URL mediatype."
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                    ],
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            "metrics": [
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                        "Automatable": "NOT_DEFINED",
                        "Recovery": "NOT_DEFINED",
                        "Safety": "NOT_DEFINED",
                        "attackComplexity": "LOW",
                        "attackRequirements": "PRESENT",
                        "attackVector": "NETWORK",
                        "baseScore": 6,
                        "baseSeverity": "MEDIUM",
                        "exploitMaturity": "NOT_DEFINED",
                        "privilegesRequired": "LOW",
                        "providerUrgency": "NOT_DEFINED",
                        "subAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "LOW",
                        "userInteraction": "NONE",
                        "valueDensity": "NOT_DEFINED",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:L/SA:N",
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                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "HIGH",
                        "vulnerabilityResponseEffort": "NOT_DEFINED"
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                            "lang": "en",
                            "value": "GENERAL"
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            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-93",
                            "description": "CWE-93",
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                            "type": "CWE"
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            },
            "references": [
                {
                    "tags": [
                        "patch"
                    ],
                    "url": "https://github.com/python/cpython/pull/143926"
                },
                {
                    "tags": [
                        "issue-tracking"
                    ],
                    "url": "https://github.com/python/cpython/issues/143925"
                },
                {
                    "tags": [
                        "vendor-advisory"
                    ],
                    "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/X66HL7SISGJT33J53OHXMZT4DFLMHVKF/"
                },
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                    "tags": [
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                    "url": "https://github.com/python/cpython/commit/a35ca3be5842505dab74dc0b90b89cde0405017a"
                }
            ],
            "source": {
                "discovery": "UNKNOWN"
            },
            "title": "Header injection via newlines in data URL mediatype",
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        "adp": [
            {
                "metrics": [
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                                "timestamp": "2026-01-21T15:40:21.188269Z",
                                "id": "CVE-2025-15282",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
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                                    {
                                        "Technical Impact": "partial"
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                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
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                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
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                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-01-21T16:14:47.449Z"
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}