FKIE_CVE-2025-12084
Vulnerability from fkie_nvd - Published: 2025-12-03 19:15 - Updated: 2026-06-17 08:31
Severity
Summary
When building nested elements using xml.dom.minidom methods such as appendChild() that have a dependency on _clear_id_cache() the algorithm is quadratic. Availability can be impacted when building excessively nested documents.
References
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "CPython",
"repo": "https://github.com/python/cpython",
"vendor": "Python Software Foundation",
"versions": [
{
"lessThan": "3.10.20",
"status": "affected",
"version": "0",
"versionType": "python"
},
{
"lessThan": "3.11.15",
"status": "affected",
"version": "3.11.0",
"versionType": "python"
},
{
"lessThan": "3.12.13",
"status": "affected",
"version": "3.12.0",
"versionType": "python"
},
{
"lessThan": "3.13.11",
"status": "affected",
"version": "3.13.0",
"versionType": "python"
},
{
"lessThan": "3.14.2",
"status": "affected",
"version": "3.14.0",
"versionType": "python"
},
{
"lessThan": "3.15.0a3",
"status": "affected",
"version": "3.15.0a1",
"versionType": "python"
}
]
}
],
"source": "cna@python.org"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:python:python:*:*:*:*:*:*:*:*",
"matchCriteriaId": "701E94DB-563E-44FF-AABF-0F49A9FF664A",
"versionEndExcluding": "3.13.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:python:python:*:*:*:*:*:*:*:*",
"matchCriteriaId": "2DC54087-753D-4990-AD62-F7D6DCD125D4",
"versionEndExcluding": "3.14.2",
"versionStartIncluding": "3.14.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:python:python:3.15.0:alpha1:*:*:*:*:*:*",
"matchCriteriaId": "A3327507-0B1D-4F28-A983-D07A2C8A7696",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:python:python:3.15.0:alpha2:*:*:*:*:*:*",
"matchCriteriaId": "C8AF17F1-A27F-4C98-BA5A-B4319710E8D1",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "When building nested elements using xml.dom.minidom methods such as appendChild() that have a dependency on _clear_id_cache() the algorithm is quadratic. Availability can be impacted when building excessively nested documents."
},
{
"lang": "es",
"value": "Al construir elementos anidados utilizando m\u00e9todos de xml.dom.minidom como appendChild() que tienen una dependencia de _clear_id_cache(), el algoritmo es cuadr\u00e1tico. La disponibilidad puede verse afectada al construir documentos excesivamente anidados."
}
],
"id": "CVE-2025-12084",
"lastModified": "2026-06-17T08:31:41.583",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"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:L",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 1.4,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"cvssMetricV40": [
{
"cvssData": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"availabilityRequirement": "NOT_DEFINED",
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"confidentialityRequirement": "NOT_DEFINED",
"exploitMaturity": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"version": "4.0",
"vulnAvailabilityImpact": "LOW",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "cna@python.org",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2025-12084",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-12-03T19:13:23.548683Z",
"version": "2.0.3"
}
}
]
},
"published": "2025-12-03T19:15:55.050",
"references": [
{
"source": "cna@python.org",
"tags": [
"Patch"
],
"url": "https://github.com/python/cpython/commit/027f21e417b26eed4505ac2db101a4352b7c51a0"
},
{
"source": "cna@python.org",
"tags": [
"Patch"
],
"url": "https://github.com/python/cpython/commit/08d8e18ad81cd45bc4a27d6da478b51ea49486e4"
},
{
"source": "cna@python.org",
"url": "https://github.com/python/cpython/commit/27648a1818749ef44c420afe6173af6868715437"
},
{
"source": "cna@python.org",
"url": "https://github.com/python/cpython/commit/41f468786762348960486c166833a218a0a436af"
},
{
"source": "cna@python.org",
"url": "https://github.com/python/cpython/commit/57937a8e5e293f0dcba5115f7b7a11b1e0c9a273"
},
{
"source": "cna@python.org",
"url": "https://github.com/python/cpython/commit/8d2d7bb2e754f8649a68ce4116271a4932f76907"
},
{
"source": "cna@python.org",
"url": "https://github.com/python/cpython/commit/9c9dda6625a2a90d2a06c657eee021d6be19842d"
},
{
"source": "cna@python.org",
"url": "https://github.com/python/cpython/commit/a46c10ec9d4050ab67b8a932e0859a2ea60c3cb8"
},
{
"source": "cna@python.org",
"url": "https://github.com/python/cpython/commit/a696ba8b4d42fd632afc9bc88ad830a2e4cceed8"
},
{
"source": "cna@python.org",
"url": "https://github.com/python/cpython/commit/c97e87593063d84a2bd9fe7068b30eb44de23dc0"
},
{
"source": "cna@python.org",
"tags": [
"Patch"
],
"url": "https://github.com/python/cpython/commit/ddcd2acd85d891a53e281c773b3093f9db953964"
},
{
"source": "cna@python.org",
"url": "https://github.com/python/cpython/commit/e91c11449cad34bac3ea55ee09ca557691d92b53"
},
{
"source": "cna@python.org",
"tags": [
"Issue Tracking",
"Patch"
],
"url": "https://github.com/python/cpython/issues/142145"
},
{
"source": "cna@python.org",
"tags": [
"Issue Tracking",
"Patch"
],
"url": "https://github.com/python/cpython/pull/142146"
}
],
"sourceIdentifier": "cna@python.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-407"
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
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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.
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.
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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.
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