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TI-2026-03431 Aliases CVE-2026-3967GHSA-7wmq-q36p-g2wg

Alfresco Activiti Process Variable Serialization System SerializableType.java createObjectInputStream deserialization

Priority MEDIUM 57CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-502.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00282 20th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AlfrescoActiviti7.0; 7.1; 7.2; 7.3; 7.4; 7.5; 7.6; 7.7; 7.8; 7.9; 7.10; 7.11; 7.12; 7.13; 7.14; 7.15; 7.16; 7.17; 7.18; 7.19; 8.0; 8.1; 8.2; 8.3; 8.4; 8.5; 8.6; 8.7; 8.8.0—No fix listedCNA
  • Activiti VendorAlfresco Affected 7.0; 7.1; 7.2; 7.3; 7.4; 7.5; 7.6; 7.7; 7.8; 7.9; 7.10; 7.11; 7.12; 7.13; 7.14; 7.15; 7.16; 7.17; 7.18; 7.19; 8.0; 8.1; 8.2; 8.3; 8.4; 8.5; 8.6; 8.7; 8.8.0 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-3967
  2. 2026-10-03 Alias added: GHSA-7wmq-q36p-g2wg

References

Exploit 1

  • TI-2019-10584 An issue was discovered in Alfresco Community Edition versions 6.0 and lower. CVSS 3.0CRITICAL 9.8
  • TI-2020-11953 Admin account takeover in Alfresco Reset Password CVSS 3.1CRITICAL 9.8
  • TI-2019-11666 The Alfresco application before 1.8.7 for Android allows SQL injection in HistorySearchProvider.java. CVSS 3.0CRITICAL 9.8
  • TI-2021-18426 An issue was discovered in Hyland org.alfresco:alfresco-content-services through 7.0.1.2. CVSS 3.1HIGH 8.8
  • TI-2020-15741 The Reset Password add-on before 1.2.0 for Alfresco has a broken algorithm (involving an… CVSS 3.1HIGH 8.8
  • TI-2019-10586 An issue was discovered in Alfresco Community Edition 5.2 201707. CVSS 3.0HIGH 7.2
See all 20 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences