CVE-2026-26338 Hyland CVE debrief

Who should care

Organizations using Hyland Alfresco Transformation Service should be aware of this vulnerability and take necessary actions to mitigate it. Operators, platform administrators, vulnerability management teams, and security teams should review the vulnerability and implement compensating controls if patches are not available.

Technical summary

The vulnerability exists in the document processing functionality of Hyland Alfresco Transformation Service, allowing unauthenticated attackers to achieve server-side request forgery (SSRF). The CVSS vector is CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/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. Defenders should focus on implementing compensating controls and monitoring for suspicious activity.

Defensive priority

MEDIUM

Recommended defensive actions

• Inventory and verify affected versions of Hyland Alfresco Transformation Service
• Apply vendor patches or updates if available
• Implement compensating controls such as network access controls and monitoring
• Monitor for suspicious activity and exception tracking
• Review relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record was published on 2026-02-19T18:24:59.930Z and was last modified on 2026-07-14T16:17:00.020Z. The NVD entry is currently Analyzed. The vulnerability allows unauthenticated attackers to achieve server-side request forgery (SSRF) through the document processing functionality. Evidence of exploitation is limited, and defenders should verify affected product deployments and review official advisories for mitigation guidance.

Official resources