CVE-2023-26920

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:naturalintelligence:fast_xml_parser:*:*:*:*:*:*:*:*", "matchCriteriaId": "94905D51-E4A0-4FAF-A3BC-98F8A0F87DCB", "versionEndExcluding": "4.1.2", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "fast-xml-parser before 4.1.2 allows __proto__ for Prototype Pollution."}, {"lang": "es", "value": "fast-xml-parser anterior a 4.1.2 permite __proto__ para Prototype Pollution."}], "id": "CVE-2023-26920", "lastModified": "2026-06-17T05:43:57.063", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2023-12-12T17:15:07.720", "references": [{"source": "cve@mitre.org", "tags": ["Exploit"], "url": "https://gist.github.com/Sudistark/a5a45bd0804d522a1392cb5023aa7ef7"}, {"source": "cve@mitre.org", "tags": ["Patch"], "url": "https://github.com/NaturalIntelligence/fast-xml-parser/commit/2b032a4f799c63d83991e4f992f1c68e4dd05804"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://github.com/advisories/GHSA-793h-6f7r-6qvm"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit"], "url": "https://gist.github.com/Sudistark/a5a45bd0804d522a1392cb5023aa7ef7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://github.com/NaturalIntelligence/fast-xml-parser/commit/2b032a4f799c63d83991e4f992f1c68e4dd05804"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/advisories/GHSA-793h-6f7r-6qvm"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1321"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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