How severe is CVE-2026-26337?

CVE-2026-26337 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2026-26337 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-2026-26337?

CVE-2026-26337 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-2026-26337?

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

Does CVE-2026-26337 have an EU (EUVD) identifier?

Yes. CVE-2026-26337 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8381.

When was CVE-2026-26337 published?

CVE-2026-26337 was published on 2026-02-19 and last updated on 2026-06-17.

CVE-2026-26337

CVE-2026-26337 is a high-severity vulnerability in Hyland Alfresco Transform Service with a CVSS 3.x base score of 8.2. 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-36.

Key facts

Severity: High (CVSS 3.x base score 8.2)
CVSS v4: 8.8
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-8381
Weakness: CWE-36
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 both arbitrary file read and server-side request forgery through the absolute path traversal.

Frequently asked questions

What is CVE-2026-26337?: Hyland Alfresco Transformation Service allows unauthenticated attackers to achieve both arbitrary file read and server-side request forgery through the absolute path traversal.
How severe is CVE-2026-26337?: CVE-2026-26337 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2026-26337 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-2026-26337?: CVE-2026-26337 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-2026-26337?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-26337 have an EU (EUVD) identifier?: Yes. CVE-2026-26337 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8381.
When was CVE-2026-26337 published?: CVE-2026-26337 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…
CVE-2026-26338 — Critical (CVSS 9.8): Hyland Alfresco Transformation Service allows unauthenticated attackers to achieve server-side request forgery (SSRF)…

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