{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-116486", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-10-26T11:37:37.948Z", "datePublished": "2026-10-26T13:08:52.051Z", "dateUpdated": "2026-10-26T16:15:59.231Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-26T13:08:52.051Z" }, "datePublic": "2026-10-26T00:00:00.000Z", "title": "Objenesis before 3.6 Type Confusion via Class Name Instantiator Cache", "descriptions": [ { "lang": "en", "value": "Objenesis before 3.6 contains a type confusion vulnerability that allows code in one class loader to substitute objects into another by exploiting instantiator caching keyed on class name. When a shared ObjenesisStd instance caches instantiators by clazz.getName() in ObjenesisBase.getInstantiatorOf(), same-named classes collide, causing newInstance() to return wrong-class objects and ClassCastException failures." } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "description": "Symbolic Name not Mapping to Correct Object", "cweId": "CWE-386", "type": "CWE" } ] } ], "affected": [ { "vendor": "easymock", "product": "objenesis", "defaultStatus": "unaffected", "packageURL": "pkg:maven/org.objenesis/objenesis", "versions": [ { "version": "0", "status": "affected", "versionType": "custom", "lessThan": "3.6" }, { "version": "3.6", "status": "unaffected", "versionType": "custom" } ] } ], "metrics": [ { "format": "CVSS", "cvssV4_0": { "version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N", "attackVector": "LOCAL", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 2, "baseSeverity": "LOW" } }, { "format": "CVSS", "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW", "baseScore": 4.5, "baseSeverity": "MEDIUM" } } ], "references": [ { "url": "https://github.com/easymock/objenesis/commit/40f90f435a06b16af74a7398f0007faeaa52c00c", "tags": [ "patch" ], "name": "Patch Commit" }, { "url": "https://github.com/easymock/objenesis/security/advisories/GHSA-743r-26gf-97ff", "tags": [ "vendor-advisory" ], "name": "GitHub Security Advisory (GHSA-743r-26gf-97ff)" }, { "url": "https://github.com/easymock/objenesis/blob/fb36e5c377ed1bf57a18386fa79d2eed4ddfcfac/main/src/main/java/org/objenesis/ObjenesisBase.java#L92-L95", "tags": [ "technical-description" ] }, { "url": "https://github.com/easymock/objenesis", "tags": [ "product" ] }, { "name": "VulnCheck Advisory: Objenesis before 3.6 Type Confusion via Class Name Instantiator Cache", "tags": [ "third-party-advisory" ], "url": "https://www.vulncheck.com/advisories/objenesis-before-3.6-type-confusion-via-class-name-instantiator-cache" } ], "credits": [ { "lang": "en", "value": "Yu Bao, PayPal Cyber Security Team", "type": "finder" } ], "x_generator": { "engine": "vulncheck-endgame" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-10-26T15:38:10.344457Z", "id": "CVE-2026-116486", "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": "2026-10-26T16:15:59.231Z" } } ] } }