{"api_version":"1","generated_at":"2026-07-23T15:11:08+00:00","cve":"CVE-2026-3967","urls":{"html":"https://cve.report/CVE-2026-3967","api":"https://cve.report/api/cve/CVE-2026-3967.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-3967","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-3967"},"summary":{"title":"Alfresco Activiti Process Variable Serialization System SerializableType.java createObjectInputStream deserialization","description":"A flaw has been found in Alfresco Activiti up to 7.19/8.8.0. Affected by this issue is the function deserialize/createObjectInputStream of the file activiti-core/activiti-engine/src/main/java/org/activiti/engine/impl/variable/SerializableType.java of the component Process Variable Serialization System. This manipulation causes deserialization. Remote exploitation of the attack is possible. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.","state":"PUBLISHED","assigner":"VulDB","published_at":"2026-03-12 00:16:12","updated_at":"2026-04-29 01:00:01"},"problem_types":["CWE-20","CWE-502","CWE-502 Deserialization","CWE-20 Improper Input Validation"],"metrics":[{"version":"4.0","source":"cna@vuldb.com","type":"Secondary","score":"2.1","severity":"LOW","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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","data":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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","baseScore":2.1,"baseSeverity":"LOW","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"PROOF_OF_CONCEPT","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}},{"version":"4.0","source":"CNA","type":"DECLARED","score":"5.3","severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","data":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"}},{"version":"3.1","source":"cna@vuldb.com","type":"Primary","score":"6.3","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","baseScore":6.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"LOW"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"6.3","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","data":{"baseScore":6.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.1"}},{"version":"3.0","source":"CNA","type":"DECLARED","score":"6.3","severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","data":{"baseScore":6.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.0"}},{"version":"2.0","source":"cna@vuldb.com","type":"Secondary","score":"6.5","severity":"","vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","data":{"version":"2.0","vectorString":"AV:N/AC:L/Au:S/C:P/I:P/A:P","baseScore":6.5,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"SINGLE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL"}},{"version":"2.0","source":"CNA","type":"DECLARED","score":"6.5","severity":"","vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR","data":{"baseScore":6.5,"vectorString":"AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR","version":"2.0"}}],"references":[{"url":"https://vuldb.com/?submit.768942","name":"https://vuldb.com/?submit.768942","refsource":"cna@vuldb.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/AnalogyC0de/public_exp/issues/16","name":"https://github.com/AnalogyC0de/public_exp/issues/16","refsource":"cna@vuldb.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://vuldb.com/?id.350396","name":"https://vuldb.com/?id.350396","refsource":"cna@vuldb.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://vuldb.com/?ctiid.350396","name":"https://vuldb.com/?ctiid.350396","refsource":"cna@vuldb.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-3967","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-3967","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 7.0","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 7.1","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 7.2","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 7.3","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 7.4","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 7.5","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 7.6","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 7.7","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 7.8","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 7.9","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 7.10","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 7.11","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 7.12","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 7.13","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 7.14","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 7.15","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 7.16","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 7.17","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 7.18","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 7.19","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 8.0","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 8.1","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 8.2","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 8.3","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 8.4","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 8.5","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 8.6","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 8.7","platforms":[]},{"source":"CNA","vendor":"Alfresco","product":"Activiti","version":"affected 8.8.0","platforms":[]}],"timeline":[{"source":"CNA","time":"2026-03-11T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"source":"CNA","time":"2026-03-11T01:00:00.000Z","lang":"en","value":"VulDB entry created"},{"source":"CNA","time":"2026-03-11T14:41:21.000Z","lang":"en","value":"VulDB entry last update"}],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Ana10gy (VulDB User)","lang":"en"},{"source":"CNA","value":"VulDB","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"3967","cve":"CVE-2026-3967","epss":"0.000520000","percentile":"0.162390000","score_date":"2026-04-22","updated_at":"2026-04-23 00:03:14"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-3967","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-03-12T13:26:20.303772Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-03-12T13:26:26.778Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"modules":["Process Variable Serialization System"],"product":"Activiti","vendor":"Alfresco","versions":[{"status":"affected","version":"7.0"},{"status":"affected","version":"7.1"},{"status":"affected","version":"7.2"},{"status":"affected","version":"7.3"},{"status":"affected","version":"7.4"},{"status":"affected","version":"7.5"},{"status":"affected","version":"7.6"},{"status":"affected","version":"7.7"},{"status":"affected","version":"7.8"},{"status":"affected","version":"7.9"},{"status":"affected","version":"7.10"},{"status":"affected","version":"7.11"},{"status":"affected","version":"7.12"},{"status":"affected","version":"7.13"},{"status":"affected","version":"7.14"},{"status":"affected","version":"7.15"},{"status":"affected","version":"7.16"},{"status":"affected","version":"7.17"},{"status":"affected","version":"7.18"},{"status":"affected","version":"7.19"},{"status":"affected","version":"8.0"},{"status":"affected","version":"8.1"},{"status":"affected","version":"8.2"},{"status":"affected","version":"8.3"},{"status":"affected","version":"8.4"},{"status":"affected","version":"8.5"},{"status":"affected","version":"8.6"},{"status":"affected","version":"8.7"},{"status":"affected","version":"8.8.0"}]}],"credits":[{"lang":"en","type":"reporter","value":"Ana10gy (VulDB User)"},{"lang":"en","type":"coordinator","value":"VulDB"}],"descriptions":[{"lang":"en","value":"A flaw has been found in Alfresco Activiti up to 7.19/8.8.0. Affected by this issue is the function deserialize/createObjectInputStream of the file activiti-core/activiti-engine/src/main/java/org/activiti/engine/impl/variable/SerializableType.java of the component Process Variable Serialization System. This manipulation causes deserialization. Remote exploitation of the attack is possible. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way."}],"metrics":[{"cvssV4_0":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"}},{"cvssV3_1":{"baseScore":6.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.1"}},{"cvssV3_0":{"baseScore":6.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.0"}},{"cvssV2_0":{"baseScore":6.5,"vectorString":"AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR","version":"2.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-502","description":"Deserialization","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-20","description":"Improper Input Validation","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-03-12T00:02:10.401Z","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","shortName":"VulDB"},"references":[{"name":"VDB-350396 | Alfresco Activiti Process Variable Serialization System SerializableType.java createObjectInputStream deserialization","tags":["vdb-entry","technical-description"],"url":"https://vuldb.com/?id.350396"},{"name":"VDB-350396 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"],"url":"https://vuldb.com/?ctiid.350396"},{"name":"Submit #768942 | Activiti <=7.20 or < 8.8.0 Deserialization","tags":["third-party-advisory"],"url":"https://vuldb.com/?submit.768942"},{"tags":["exploit","issue-tracking"],"url":"https://github.com/AnalogyC0de/public_exp/issues/16"}],"timeline":[{"lang":"en","time":"2026-03-11T00:00:00.000Z","value":"Advisory disclosed"},{"lang":"en","time":"2026-03-11T01:00:00.000Z","value":"VulDB entry created"},{"lang":"en","time":"2026-03-11T14:41:21.000Z","value":"VulDB entry last update"}],"title":"Alfresco Activiti Process Variable Serialization System SerializableType.java createObjectInputStream deserialization"}},"cveMetadata":{"assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","assignerShortName":"VulDB","cveId":"CVE-2026-3967","datePublished":"2026-03-12T00:02:10.401Z","dateReserved":"2026-03-11T13:36:15.186Z","dateUpdated":"2026-03-12T13:26:26.778Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-03-12 00:16:12","lastModifiedDate":"2026-04-29 01:00:01","problem_types":["CWE-20","CWE-502","CWE-502 Deserialization","CWE-20 Improper Input Validation"],"metrics":{"cvssMetricV40":[{"source":"cna@vuldb.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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","baseScore":2.1,"baseSeverity":"LOW","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"PROOF_OF_CONCEPT","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"cna@vuldb.com","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","baseScore":6.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"LOW"},"exploitabilityScore":2.8,"impactScore":3.4}],"cvssMetricV2":[{"source":"cna@vuldb.com","type":"Secondary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:S/C:P/I:P/A:P","baseScore":6.5,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"SINGLE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":8,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"3967","Ordinal":"1","Title":"Alfresco Activiti Process Variable Serialization System Serializ","CVE":"CVE-2026-3967","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"3967","Ordinal":"1","NoteData":"A flaw has been found in Alfresco Activiti up to 7.19/8.8.0. Affected by this issue is the function deserialize/createObjectInputStream of the file activiti-core/activiti-engine/src/main/java/org/activiti/engine/impl/variable/SerializableType.java of the component Process Variable Serialization System. This manipulation causes deserialization. Remote exploitation of the attack is possible. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.","Type":"Description","Title":"Alfresco Activiti Process Variable Serialization System Serializ"}]}}}