CVE-2026-26336: Hyland Alfresco Improper Authorization Arbitrary File Read

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-02-19 · updated 2026-06-17
Weakness: CWE-863

Description

Hyland Alfresco allows unauthenticated attackers to read arbitrary files from protected directories (like WEB-INF) via the "/share/page/resource/" endpoint, thus leading to the disclosure of sensitive configuration files.

Affected products

Hyland Alfresco Content Services: before 25.3; from 7.4.0 through 7.4.2.5; from 23.1 through 23.6.0; from 25.1 through 25.2 — fixed in 25.3

How to fix

Upgrade to a fixed version: Hyland Alfresco Content Services 25.3. Check the vendor advisory for mitigations.

References

https://connect.hyland.com/t5/alfresco-blog/cve-2026-26336-unauthenticated-arbitrary-file-read-in-alfresco/ba-p/496550
https://www.hyland.com/en/solutions/products/alfresco-platform
https://www.vulncheck.com/advisories/hyland-alfresco-improper-authorization-arbitrary-file-read

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