CVE-2026-26339

CRITICAL 9.8

Hyland Alfresco Transformation Service Argument Injection RCE

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

Hyland Alfresco Transformation Service allows unauthenticated attackers to achieve remote code execution through the argument injection vulnerability, which exists in the document processing functionality.

CWE	CWE-918
Vendor	hyland
Product	alfresco transformation service (enterprise)
Published	Feb 19, 2026
Last Updated	Feb 20, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

Hyland / Alfresco Transformation Service (Enterprise)

0 < 4.2.3

Hyland / Alfresco Community (Transform Core)

0 < 5.2.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

connect.hyland.com: https://connect.hyland.com/t5/alfresco-blog/security-update-cve-2026-26337-cve-2026-26338-cve-2026-26339/ba-p/496551 hyland.com: https://www.hyland.com/en/solutions/products/alfresco-platform vulncheck.com: https://www.vulncheck.com/advisories/hyland-alfresco-transformation-service-argument-injection-rce

Credits

Piotr Bazydlo (@chudyPB) of watchTowr