CVE-2021-3902

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{"affected": [{"affectedData": [{"product": "dompdf/dompdf", "vendor": "dompdf", "versions": [{"lessThan": "2.0.0", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "source": "security@huntr.dev"}, {"affectedData": [{"cpes": ["cpe:2.3:a:dompdf:dompdf:*:beta3:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "dompdf", "vendor": "dompdf", "versions": [{"lessThan": "2.0.0", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:dompdf_project:dompdf:*:*:*:*:*:*:*:*", "matchCriteriaId": "CF3441FB-3B15-4935-8A8F-964D7DDFBCAD", "versionEndExcluding": "2.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An improper restriction of external entities (XXE) vulnerability in dompdf/dompdf's SVG parser allows for Server-Side Request Forgery (SSRF) and deserialization attacks. This issue affects all versions prior to 2.0.0. The vulnerability can be exploited even if the isRemoteEnabled option is set to false. It allows attackers to perform SSRF, disclose internal image files, and cause PHAR deserialization attacks."}, {"lang": "es", "value": "Una vulnerabilidad de restricci\u00f3n indebida de entidades externas (XXE) en el analizador SVG de dompdf/dompdf permite ataques de deserializaci\u00f3n y Server-Side Request Forgery (SSRF). Este problema afecta a todas las versiones anteriores a la 2.0.0. La vulnerabilidad se puede explotar incluso si la opci\u00f3n isRemoteEnabled est\u00e1 configurada como falsa. Permite a los atacantes realizar SSRF, divulgar archivos de im\u00e1genes internos y provocar ataques de deserializaci\u00f3n PHAR."}], "id": "CVE-2021-3902", "lastModified": "2026-06-17T04:05:57.500", "metrics": {"cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "security@huntr.dev", "type": "Secondary"}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-3902", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2024-11-18T14:34:31.414760Z", "version": "2.0.3"}}]}, "published": "2024-11-15T11:15:06.190", "references": [{"source": "security@huntr.dev", "tags": ["Patch"], "url": "https://github.com/dompdf/dompdf/commit/f56bc8e40be6c0ae0825e6c7396f4db80620b799"}, {"source": "security@huntr.dev", "tags": ["Exploit", "Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://huntr.com/bounties/a6071c07-806f-429a-8656-a4742e4191b1"}], "sourceIdentifier": "security@huntr.dev", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-611"}], "source": "security@huntr.dev", "type": "Secondary"}]}

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