{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-29063", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-03T20:51:43.481Z", "datePublished": "2026-03-06T18:25:22.438Z", "dateUpdated": "2026-03-06T19:33:31.642Z"}, "containers": {"cna": {"title": "Immutable.js: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in immutable", "problemTypes": [{"descriptions": [{"cweId": "CWE-1321", "lang": "en", "description": "CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 8.7, "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/immutable-js/immutable-js/security/advisories/GHSA-wf6x-7x77-mvgw", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/immutable-js/immutable-js/security/advisories/GHSA-wf6x-7x77-mvgw"}, {"name": "https://github.com/immutable-js/immutable-js/releases/tag/v3.8.3", "tags": ["x_refsource_MISC"], "url": "https://github.com/immutable-js/immutable-js/releases/tag/v3.8.3"}, {"name": "https://github.com/immutable-js/immutable-js/releases/tag/v4.3.8", "tags": ["x_refsource_MISC"], "url": "https://github.com/immutable-js/immutable-js/releases/tag/v4.3.8"}, {"name": "https://github.com/immutable-js/immutable-js/releases/tag/v5.1.5", "tags": ["x_refsource_MISC"], "url": "https://github.com/immutable-js/immutable-js/releases/tag/v5.1.5"}], "affected": [{"vendor": "immutable-js", "product": "immutable-js", "versions": [{"version": "< 3.8.3", "status": "affected"}, {"version": "< 4.3.7", "status": "affected"}, {"version": "< 5.1.5", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-06T18:25:22.438Z"}, "descriptions": [{"lang": "en", "value": "Immutable.js provides many Persistent Immutable data structures. Prior to versions 3.8.3, 4.3.7, and 5.1.5, Prototype Pollution is possible in immutable via the mergeDeep(), mergeDeepWith(), merge(), Map.toJS(), and Map.toObject() APIs. This issue has been patched in versions 3.8.3, 4.3.7, and 5.1.5."}], "source": {"advisory": "GHSA-wf6x-7x77-mvgw", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-03-06T19:32:37.694711Z", "id": "CVE-2026-29063", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"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": "2026-03-06T19:33:31.642Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-29063", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-03-06T19:32:37.694711Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-06T19:32:46.434Z"}}], "cna": {"title": "Immutable.js: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in immutable", "source": {"advisory": "GHSA-wf6x-7x77-mvgw", "discovery": "UNKNOWN"}, "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 8.7, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH"}}], "affected": [{"vendor": "immutable-js", "product": "immutable-js", "versions": [{"status": "affected", "version": "< 3.8.3"}, {"status": "affected", "version": "< 4.3.7"}, {"status": "affected", "version": "< 5.1.5"}]}], "references": [{"url": "https://github.com/immutable-js/immutable-js/security/advisories/GHSA-wf6x-7x77-mvgw", "name": "https://github.com/immutable-js/immutable-js/security/advisories/GHSA-wf6x-7x77-mvgw", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/immutable-js/immutable-js/releases/tag/v3.8.3", "name": "https://github.com/immutable-js/immutable-js/releases/tag/v3.8.3", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/immutable-js/immutable-js/releases/tag/v4.3.8", "name": "https://github.com/immutable-js/immutable-js/releases/tag/v4.3.8", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/immutable-js/immutable-js/releases/tag/v5.1.5", "name": "https://github.com/immutable-js/immutable-js/releases/tag/v5.1.5", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "Immutable.js provides many Persistent Immutable data structures. Prior to versions 3.8.3, 4.3.7, and 5.1.5, Prototype Pollution is possible in immutable via the mergeDeep(), mergeDeepWith(), merge(), Map.toJS(), and Map.toObject() APIs. This issue has been patched in versions 3.8.3, 4.3.7, and 5.1.5."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-1321", "description": "CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-06T18:25:22.438Z"}}}, "cveMetadata": {"cveId": "CVE-2026-29063", "state": "PUBLISHED", "dateUpdated": "2026-03-06T19:33:31.642Z", "dateReserved": "2026-03-03T20:51:43.481Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-03-06T18:25:22.438Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Immutable.js provides many Persistent Immutable data structures. Prior to versions 3.8.3, 4.3.7, and 5.1.5, Prototype Pollution is possible in immutable via the mergeDeep(), mergeDeepWith(), merge(), Map.toJS(), and Map.toObject() APIs. This issue has been patched in versions 3.8.3, 4.3.7, and 5.1.5."}], "id": "CVE-2026-29063", "lastModified": "2026-03-06T19:16:21.557", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.7, "baseSeverity": "HIGH", "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:N/PR:N/UI:N/VC:H/VI:N/VA:N/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": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-03-06T19:16:21.557", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/immutable-js/immutable-js/releases/tag/v3.8.3"}, {"source": "security-advisories@github.com", "url": "https://github.com/immutable-js/immutable-js/releases/tag/v4.3.8"}, {"source": "security-advisories@github.com", "url": "https://github.com/immutable-js/immutable-js/releases/tag/v5.1.5"}, {"source": "security-advisories@github.com", "url": "https://github.com/immutable-js/immutable-js/security/advisories/GHSA-wf6x-7x77-mvgw"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1321"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}