CVE-2022-39016 — Javascript injection in PDFtron in M-Files Hubshare before 3

Javascript injection in PDFtron in M-Files Hubshare before 3.3.10.9 allows authenticated attackers to perform an account takeover via a crafted PDF upload.

01What is this vulnerability?

Javascript injection in PDFtron in M-Files Hubshare before 3.3.10.9 allows authenticated attackers to perform an account takeover via a crafted PDF upload.

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: 2022-10-31T20:06:26.219Z
• Last modified: 2025-05-06T19:20:26.357Z

09References

• www.themissinglink.com.au — https://www.themissinglink.com.au/security-advisories/cve-2022-39016