CVE-2026-57917

Improper Restriction of XML External Entity Reference in proCertum SmartSign

MEDIUM
4.8
CVSS Score
Published: July 27, 2026 at 10:29 AM UTC
Updated: October 24, 2026 at 01:10 PM UTC
1 product affected across 1 vendorproCertum SmartSign

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Severity
MEDIUM4.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

proCertum SmartSign parses external XML entities from arbitrary crafted signature files, enabling SSRF and potentially allowing the reading of local files, depending on the parser's configuration. The XML External Entity (XXE) vulnerability is triggered simply by previewing a file in the file selection window, before the victim clicks “Open”. This issue was fixed in version 9.4.3.90.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0 ≤ v < 9.4.3.900
Affected range stops below 9.4.3.90, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.8MEDIUMCERT-PL
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-611

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