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    "cveMetadata": {
        "cveId": "CVE-2025-6069",
        "assignerOrgId": "28c92f92-d60d-412d-b760-e73465c3df22",
        "state": "PUBLISHED",
        "assignerShortName": "PSF",
        "dateReserved": "2025-06-13T14:05:15.473Z",
        "datePublished": "2025-06-17T13:39:46.058Z",
        "dateUpdated": "2026-07-31T14:01:47.064Z"
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    "containers": {
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            "affected": [
                {
                    "defaultStatus": "unaffected",
                    "modules": [
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                    "product": "CPython",
                    "repo": "https://github.com/python/cpython",
                    "vendor": "Python Software Foundation",
                    "versions": [
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                            "version": "0",
                            "lessThan": "3.9.24",
                            "status": "affected",
                            "versionType": "python"
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                            "version": "3.10.0",
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                            "status": "affected",
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            "credits": [
                {
                    "lang": "en",
                    "type": "remediation developer",
                    "value": "Serhiy Storchaka"
                },
                {
                    "lang": "en",
                    "type": "reporter",
                    "value": "Jake Howard"
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                {
                    "lang": "en",
                    "type": "finder",
                    "value": "sw0rd1ight"
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            ],
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                    "lang": "en",
                    "supportingMedia": [
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                            "base64": false,
                            "type": "text/html",
                            "value": "The html.parser.HTMLParser class had worse-case quadratic complexity when processing certain crafted malformed inputs potentially leading to amplified denial-of-service."
                        }
                    ],
                    "value": "The html.parser.HTMLParser class had worse-case quadratic complexity when processing certain crafted malformed inputs potentially leading to amplified denial-of-service."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "LOW",
                        "baseScore": 4.3,
                        "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:L",
                        "version": "3.1"
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                    "format": "CVSS",
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                            "value": "GENERAL"
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                {
                    "descriptions": [
                        {
                            "cweId": "CWE-1333",
                            "description": "CWE-1333 Inefficient Regular Expression Complexity",
                            "lang": "en",
                            "type": "CWE"
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                    ]
                }
            ],
            "providerMetadata": {
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            "references": [
                {
                    "tags": [
                        "issue-tracking"
                    ],
                    "url": "https://github.com/python/cpython/issues/135462"
                },
                {
                    "tags": [
                        "patch"
                    ],
                    "url": "https://github.com/python/cpython/pull/135464"
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                    "url": "https://github.com/python/cpython/commit/4455cbabf991e202185a25a631af206f60bbc949"
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                {
                    "tags": [
                        "patch"
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                    "url": "https://github.com/python/cpython/commit/d851f8e258c7328814943e923a7df81bca15df4b"
                },
                {
                    "tags": [
                        "vendor-advisory"
                    ],
                    "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/K5PIYLR6EP3WR7ZOKKYQUWEDNQVUXOYM/"
                },
                {
                    "tags": [
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                    "url": "https://github.com/python/cpython/commit/8d1b3dfa09135affbbf27fb8babcf3c11415df49"
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                    "url": "https://github.com/python/cpython/commit/fdc9d214c01cb4588f540cfa03726bbf2a33fc15"
                }
            ],
            "source": {
                "discovery": "UNKNOWN"
            },
            "title": "HTMLParser quadratic complexity when processing malformed inputs",
            "x_generator": {
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        },
        "adp": [
            {
                "metrics": [
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                            "content": {
                                "timestamp": "2025-06-17T13:58:28.646020Z",
                                "id": "CVE-2025-6069",
                                "options": [
                                    {
                                        "Exploitation": "none"
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                                    {
                                        "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": "2025-06-17T13:58:41.637Z"
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}