CVE-2026-48207

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-48207", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-05-21T12:06:15.985Z", "datePublished": "2026-05-21T15:51:12.292Z", "dateUpdated": "2026-05-21T18:37:32.208Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://pypi.org/", "defaultStatus": "unaffected", "packageName": "pyfory", "product": "Apache Fory", "vendor": "Apache Software Foundation", "versions": [{"lessThan": "1.0.0", "status": "affected", "version": "0.13.0", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "reporter", "value": "Lide Wen"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p><span style=\"background-color: rgb(255, 255, 255);\">Deserialization of untrusted data in Apache Fory PyFory. PyFory's ReduceSerializer could bypass documented DeserializationPolicy validation hooks during reduce-state restoration and global-name resolution. An application is vulnerable if it deserializes attacker-controlled data using PyFory Python-native mode with strict mode disabled and relies on DeserializationPolicy to restrict unsafe classes, functions, or module attributes.</span></p><p>This issue affects Apache Fory: from before 1.0.0.</p><p><span style=\"background-color: rgb(255, 255, 255);\">Mitigation: Users of Apache Fory are recommended to upgrade to version 1.0.0 or later, which enforces DeserializationPolicy validation for the affected ReduceSerializer paths and thus fixes this issue.</span><br><br><br></p>"}], "value": "Deserialization of untrusted data in Apache Fory PyFory. PyFory's ReduceSerializer could bypass documented DeserializationPolicy validation hooks during reduce-state restoration and global-name resolution. An application is vulnerable if it deserializes attacker-controlled data using PyFory Python-native mode with strict mode disabled and relies on DeserializationPolicy to restrict unsafe classes, functions, or module attributes.\n\nThis issue affects Apache Fory: from before 1.0.0.\n\nMitigation: Users of Apache Fory are recommended to upgrade to version 1.0.0 or later, which enforces DeserializationPolicy validation for the affected ReduceSerializer paths and thus fixes this issue."}], "metrics": [{"other": {"content": {"text": "important"}, "type": "Textual description of severity"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-502", "description": "CWE-502 Deserialization of Untrusted Data", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-05-21T15:51:12.292Z"}, "references": [{"tags": ["vendor-advisory"], "url": "https://fory.apache.org/security/#cve-2026-48207-pyfory-reduceserializer-deserializationpolicy-bypass"}], "source": {"discovery": "UNKNOWN"}, "title": "Apache Fory: PyFory ReduceSerializer Incomplete Policy Enforcement", "x_generator": {"engine": "Vulnogram 0.2.0"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-05-21T17:10:26.856661Z", "id": "CVE-2026-48207", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-21T17:10:52.297Z"}}, {"title": "CVE Program Container", "references": [{"url": "http://www.openwall.com/lists/oss-security/2026/05/21/10"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-05-21T18:37:32.208Z"}}]}}

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{"affected": [{"affectedData": [{"collectionURL": "https://pypi.org/", "defaultStatus": "unaffected", "packageName": "pyfory", "product": "Apache Fory", "vendor": "Apache Software Foundation", "versions": [{"lessThan": "1.0.0", "status": "affected", "version": "0.13.0", "versionType": "semver"}]}], "source": "security@apache.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:apache:fory:*:*:*:*:*:*:*:*", "matchCriteriaId": "1A215346-77E6-41E4-800B-07CAEC26B055", "versionEndExcluding": "1.0.0", "versionStartIncluding": "0.13.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Deserialization of untrusted data in Apache Fory PyFory. PyFory's ReduceSerializer could bypass documented DeserializationPolicy validation hooks during reduce-state restoration and global-name resolution. An application is vulnerable if it deserializes attacker-controlled data using PyFory Python-native mode with strict mode disabled and relies on DeserializationPolicy to restrict unsafe classes, functions, or module attributes.\n\nThis issue affects Apache Fory: from before 1.0.0.\n\nMitigation: Users of Apache Fory are recommended to upgrade to version 1.0.0 or later, which enforces DeserializationPolicy validation for the affected ReduceSerializer paths and thus fixes this issue."}, {"lang": "es", "value": "Deserializaci\u00f3n de datos no confiables en Apache Fory PyFory. El ReduceSerializer de PyFory podr\u00eda eludir los ganchos de validaci\u00f3n documentados de DeserializationPolicy durante la restauraci\u00f3n del estado de reducci\u00f3n y la resoluci\u00f3n de nombres globales. Una aplicaci\u00f3n es vulnerable si deserializa datos controlados por el atacante usando el modo nativo de Python de PyFory con el modo estricto deshabilitado y se basa en DeserializationPolicy para restringir clases, funciones o atributos de m\u00f3dulo inseguros.\n\nEste problema afecta a Apache Fory: desde antes de la versi\u00f3n 1.0.0.\n\nMitigaci\u00f3n: Se recomienda a los usuarios de Apache Fory actualizar a la versi\u00f3n 1.0.0 o posterior, que aplica la validaci\u00f3n de DeserializationPolicy para las rutas afectadas de ReduceSerializer y, por lo tanto, soluciona este problema."}], "id": "CVE-2026-48207", "lastModified": "2026-07-23T16:10:00.137", "metrics": {"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": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-48207", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-05-21T17:10:26.856661Z", "version": "2.0.3"}}]}, "published": "2026-05-21T17:16:21.857", "references": [{"source": "security@apache.org", "tags": ["Vendor Advisory"], "url": "https://fory.apache.org/security/#cve-2026-48207-pyfory-reduceserializer-deserializationpolicy-bypass"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2026/05/21/10"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-502"}], "source": "security@apache.org", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0.13.0,1.0.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "Apache Fory", "source": "cna", "vendor": "Apache Software Foundation"}, "product": "fory", "vendor": "apache"}], "created": "2026-05-21T18:30:16.292117+00:00", "updated": "2026-05-22T12:38:32.919760+00:00", "vendors": ["apache", "apache$PRODUCT$fory"]}