Javascript injection in PDFtron in M-Files Hubshare

published 2022-10-31 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-41562

cvss: 8.2; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 51%
public exploits: 0; none known

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.

Patch / fix

fixed in 1

m-files hubshare 3.3.10.9

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 18 mo ago (2025-05-06)

Exploit prediction

0.66% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.2	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:L
NVD	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

M-Files Hubshare

Classification

Weakness

CWE-20 Improper Input Validation
CWE-79 Improper Neutralization of Input During Web Page Generation
CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

References

themissinglink.com.au /security-advisories/cve-2022-39016
third-party-advisory

Sources

CVE List CVE-2022-39016
NVD CVE-2022-39016

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary