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CVE-2026-3967

Alfresco Activiti Process Variable Serialization System SerializableType.java createObjectInputStream deserialization

Published: Mar 12, 2026Updated: Apr 29, 2026 Sources: CVE List NVDCWE-20
NVD MITRE
6.3CVSSMEDIUM
EPSS Score
0.2%
Top 84.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:LI:LA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-20CWE-502

Affected Products

ActivitiAlfresco
Mixed
Enterprise Software / document-mgmt
alfrescocommercialGBEnterprise Softwareaka alfresco software

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

3 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/AnalogyC0de/public_exp/issues/16
github.com
https://vuldb.com/?ctiid.350396
vuldb.com
https://vuldb.com/?id.350396
vuldb.com
and 1 more references View all →

Timeline

Published
Mar 12, 2026
Last Updated
Apr 29, 2026

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