How severe is CVE-2026-26338?

CVE-2026-26338 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-26338 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-26338?

CVE-2026-26338 primarily affects Hyland Alfresco Transform Service. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-26338?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-26338 have an EU (EUVD) identifier?

Yes. CVE-2026-26338 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8382.

When was CVE-2026-26338 published?

CVE-2026-26338 was published on 2026-02-19 and last updated on 2026-06-17.

CVE-2026-26338

CVE-2026-26338 is a critical-severity vulnerability in Hyland Alfresco Transform Service with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 6.9
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-8382
Weakness: CWE-918
Affected product: Hyland Alfresco Transform Service
Published: 2026-02-19
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2026-26338?: Hyland Alfresco Transformation Service allows unauthenticated attackers to achieve server-side request forgery (SSRF) through the document processing functionality.
How severe is CVE-2026-26338?: CVE-2026-26338 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-26338 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-26338?: CVE-2026-26338 primarily affects Hyland Alfresco Transform Service. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-26338?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-26338 have an EU (EUVD) identifier?: Yes. CVE-2026-26338 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8382.
When was CVE-2026-26338 published?: CVE-2026-26338 was published on 2026-02-19 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:hyland:alfresco_transform_service:*:*:*:*:*:*:*:*
cpe:2.3:a:hyland:alfresco_transform_core:*:*:*:*:*:*:*:*
cpe:2.3:a:hyland:alfresco_transform_core:5.3.0:alpha1:*:*:*:*:*:*

More vulnerabilities in Hyland Alfresco Transform Service

CVE-2026-26339 — Critical (CVSS 9.8): Hyland Alfresco Transformation Service allows unauthenticated attackers to achieve remote code execution through the…
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