SSRF in Hyland Alfresco Community (Transform Core)
CVE-2026-26339
Hyland Alfresco Transformation Service allows unauthenticated attackers to achieve remote code execution through the argument injection vulnerability, which exists in the document processing functionality.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.011 (63.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 63.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.011 · change: +0.005
Affected products
Weakness classification (CWE)
References
- connect.hyland.com/t5/alfresco-blog/security-update-cve-2026-26337-cve-2026-263… (vendor-advisory, patch, Vendor Advisory)
- www.hyland.com/en/solutions/products/alfresco-platform (Product, product)
- www.vulncheck.com/advisories/hyland-alfresco-transformation-service-argument-in… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-26339?
- CVE-2026-26339 is a critical-severity vulnerability in Hyland Alfresco Community (Transform Core), classified under Server-Side Request Forgery (SSRF). CVSS score: 9.8/10. Published 2026-02-19.
- How severe is CVE-2026-26339?
- Critical severity. CVSS v3 base score is 9.8 out of 10.