{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-103222", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-09-30T07:25:13.598Z", "datePublished": "2026-09-30T14:00:10.446Z", "dateUpdated": "2026-09-30T16:26:42.244Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-09-30T14:00:10.446Z"}, "title": "Blosc C-Blosc2 blosclz Decompression blosclz.c blosclz_decompress integer overflow", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-190", "lang": "en", "description": "Integer Overflow"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-189", "lang": "en", "description": "Numeric Error"}]}], "affected": [{"vendor": "Blosc", "product": "C-Blosc2", "versions": [{"version": "3.3.0", "status": "affected"}, {"version": "3.3.1", "status": "affected"}, {"version": "3.3.2", "status": "affected"}, {"version": "3.3.3", "status": "unaffected"}], "cpes": ["cpe:2.3:a:blosc:c-blosc2:*:*:*:*:*:*:*:*"], "modules": ["blosclz Decompression"]}], "descriptions": [{"lang": "en", "value": "A vulnerability was determined in Blosc C-Blosc2 up to 3.3.2. This impacts the function blosclz_decompress of the file blosc/blosclz.c of the component blosclz Decompression. Executing a manipulation can lead to integer overflow. The attack may be launched remotely. A high complexity level is associated with this attack. The exploitability is said to be difficult. Upgrading to version 3.3.3 will fix this issue. This patch is called fe2964d114d97847f56570a0ab2be2c57ccbeedc. The affected component should be upgraded."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 6.3, "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X", "baseSeverity": "MEDIUM"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 5.6, "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C", "baseSeverity": "MEDIUM"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 5.6, "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C", "baseSeverity": "MEDIUM"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 5.1, "vectorString": "AV:N/AC:H/Au:N/C:P/I:P/A:P/E:ND/RL:OF/RC:C"}}], "timeline": [{"time": "2026-09-30T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-09-30T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-09-30T09:30:19.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "zzxzzb (VulDB User)", "type": "reporter"}], "references": [{"url": "https://vuldb.com/vuln/411905", "name": "VDB-411905 | Blosc C-Blosc2 blosclz Decompression blosclz.c blosclz_decompress integer overflow", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/411905/cti", "name": "VDB-411905 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/cve/CVE-2026-103222", "name": "CVE-2026-103222 | CVE Analysis and Report", "tags": ["third-party-advisory"]}, {"url": "https://vuldb.com/submit/954976", "name": "Submit #954976 | Blosc c-blosc2 >= 2.0.0, < fix commit fe2964d114d9 Memory Corruption", "tags": ["third-party-advisory"]}, {"url": "https://github.com/Blosc/c-blosc2/commit/fe2964d114d97847f56570a0ab2be2c57ccbeedc", "tags": ["patch"]}, {"url": "https://github.com/Blosc/c-blosc2/releases/tag/v3.3.3", "tags": ["patch"]}, {"url": "https://github.com/Blosc/c-blosc2/", "tags": ["product"]}], "tags": ["x_open-source"], "x_generator": ["VulDB PVTS v202609"]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-30T16:25:43.440256Z", "id": "CVE-2026-103222", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-30T16:26:42.244Z"}}]}}

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{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:blosc:c-blosc2:*:*:*:*:*:*:*:*"], "modules": ["blosclz Decompression"], "product": "C-Blosc2", "vendor": "Blosc", "versions": [{"status": "affected", "version": "3.3.0"}, {"status": "affected", "version": "3.3.1"}, {"status": "affected", "version": "3.3.2"}, {"status": "unaffected", "version": "3.3.3"}]}], "source": "[email protected]"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was determined in Blosc C-Blosc2 up to 3.3.2. This impacts the function blosclz_decompress of the file blosc/blosclz.c of the component blosclz Decompression. Executing a manipulation can lead to integer overflow. The attack may be launched remotely. A high complexity level is associated with this attack. The exploitability is said to be difficult. Upgrading to version 3.3.3 will fix this issue. This patch is called fe2964d114d97847f56570a0ab2be2c57ccbeedc. The affected component should be upgraded."}], "id": "CVE-2026-103222", "lastModified": "2026-09-30T17:16:41.867", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "HIGH", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.1, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:H/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 4.9, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "[email protected]", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.6, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.4, "source": "[email protected]", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "NONE", "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:H/AT:N/PR:N/UI:N/VC:L/VI:L/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": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "[email protected]", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-103222", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-09-30T16:25:43.440256Z", "version": "2.0.3"}}]}, "published": "2026-09-30T15:22:25.163", "references": [{"source": "[email protected]", "url": "https://github.com/Blosc/c-blosc2/"}, {"source": "[email protected]", "url": "https://github.com/Blosc/c-blosc2/commit/fe2964d114d97847f56570a0ab2be2c57ccbeedc"}, {"source": "[email protected]", "url": "https://github.com/Blosc/c-blosc2/releases/tag/v3.3.3"}, {"source": "[email protected]", "url": "https://vuldb.com/cve/CVE-2026-103222"}, {"source": "[email protected]", "url": "https://vuldb.com/submit/954976"}, {"source": "[email protected]", "url": "https://vuldb.com/vuln/411905"}, {"source": "[email protected]", "url": "https://vuldb.com/vuln/411905/cti"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-189"}, {"lang": "en", "value": "CWE-190"}], "source": "[email protected]", "type": "Secondary"}]}

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