Alfresco Activiti Process Variable Serialization System SerializableType.java createObjectInputStream deserialization

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-3967
StatePUBLISHED
AssignerVulDB
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-12 00:16:12 UTC
Updated2026-04-29 01:00:01 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v4.0 2.1 LOW from [email protected]

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

EPSS: 0.000520000 probability, percentile 0.162390000 (date 2026-04-22)

Problem Types: CWE-20 | CWE-502 | CWE-502 Deserialization | CWE-20 Improper Input Validation

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary2.1LOWCVSS: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/C...
4.0CNADECLARED5.3MEDIUMCVSS: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
3.1[email protected]Primary6.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
3.1CNADECLARED6.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
3.0CNADECLARED6.3MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
2.0[email protected]Secondary6.5AV:N/AC:L/Au:S/C:P/I:P/A:P
2.0CNADECLARED6.5AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

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

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Alfresco Activiti affected 7.0 Not specified
CNA Alfresco Activiti affected 7.1 Not specified
CNA Alfresco Activiti affected 7.2 Not specified
CNA Alfresco Activiti affected 7.3 Not specified
CNA Alfresco Activiti affected 7.4 Not specified
CNA Alfresco Activiti affected 7.5 Not specified
CNA Alfresco Activiti affected 7.6 Not specified
CNA Alfresco Activiti affected 7.7 Not specified
CNA Alfresco Activiti affected 7.8 Not specified
CNA Alfresco Activiti affected 7.9 Not specified
CNA Alfresco Activiti affected 7.10 Not specified
CNA Alfresco Activiti affected 7.11 Not specified
CNA Alfresco Activiti affected 7.12 Not specified
CNA Alfresco Activiti affected 7.13 Not specified
CNA Alfresco Activiti affected 7.14 Not specified
CNA Alfresco Activiti affected 7.15 Not specified
CNA Alfresco Activiti affected 7.16 Not specified
CNA Alfresco Activiti affected 7.17 Not specified
CNA Alfresco Activiti affected 7.18 Not specified
CNA Alfresco Activiti affected 7.19 Not specified
CNA Alfresco Activiti affected 8.0 Not specified
CNA Alfresco Activiti affected 8.1 Not specified
CNA Alfresco Activiti affected 8.2 Not specified
CNA Alfresco Activiti affected 8.3 Not specified
CNA Alfresco Activiti affected 8.4 Not specified
CNA Alfresco Activiti affected 8.5 Not specified
CNA Alfresco Activiti affected 8.6 Not specified
CNA Alfresco Activiti affected 8.7 Not specified
CNA Alfresco Activiti affected 8.8.0 Not specified

References

ReferenceSourceLinkTags
vuldb.com [email protected] vuldb.com
github.com/AnalogyC0de/public_exp/issues/16 [email protected] github.com
vuldb.com [email protected] vuldb.com
vuldb.com [email protected] vuldb.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Ana10gy (VulDB User) (en)

CNA: VulDB (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-03-11T00:00:00.000ZAdvisory disclosed
CNA2026-03-11T01:00:00.000ZVulDB entry created
CNA2026-03-11T14:41:21.000ZVulDB entry last update

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