CVE-2022-39018 — Broken access controls on PDFtron data in M-Files Hubshare before 3

Broken access controls on PDFtron data in M-Files Hubshare before 3.3.11.3 allows unauthenticated attackers to access restricted PDF files via a known URL.

01What is this vulnerability?

Broken access controls on PDFtron data in M-Files Hubshare before 3.3.11.3 allows unauthenticated attackers to access restricted PDF files via a known URL.

02Affected products

Vendor	Product	Versions
M-Files	Hubshare	3.3.1.6

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2022-10-31T20:09:57.134Z
• Last modified: 2025-05-02T17:46:24.638Z

09References

• www.themissinglink.com.au — https://www.themissinglink.com.au/security-advisories/cve-2022-39018