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CVE-2026-26338

Hyland Alfresco Transform Core server-side request forgery (SSRF)

9.8 CRITICALEPSS 0.67%
  1. Published19 Feb 2026

Description

Hyland Alfresco Transformation Service allows unauthenticated attackers to achieve server-side request forgery (SSRF) through the document processing functionality.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Hyland Alfresco Transform Core< 5.3.0 · 5.3.0
Hyland Alfresco Transform Service< 4.3

Remediation

Fixed in
Hyland Alfresco Transform Core≥ 5.3.0
Hyland Alfresco Transform Service≥ 4.3

References

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Frequently asked

Is CVE-2026-26338 being actively exploited?

CVE-2026-26338 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.67%.

How severe is CVE-2026-26338?

CVE-2026-26338 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.67% probability of exploitation.

Which products are affected by CVE-2026-26338?

Affected products include Hyland Alfresco Transform Core, Hyland Alfresco Transform Service.

How do I fix CVE-2026-26338?

Upgrade affected software to a fixed version, for example Hyland Alfresco Transform Core 5.3.0, Hyland Alfresco Transform Service 4.3 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-26338 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.