Server-Side Request Forgery (SSRF) in MiCollab and MiVoice Business Solution Virtual Instance (MiVB SVI) - #VU134870
Published: June 18, 2026
Vulnerability identifier: #VU134870
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:L/SI:N/SA:N/E:U/U:Amber
CVE-ID: N/A
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Mitel
Affected software:
MiCollab
MiVoice Business Solution Virtual Instance (MiVB SVI)
MiCollab
MiVoice Business Solution Virtual Instance (MiVB SVI)
Detailed vulnerability description
The vulnerability allows a remote attacker to leverage connections and permissions available to the host server.
The vulnerability exists due to insufficient restriction of user-provided URLs in the MiCollab Client Service component when processing user-supplied URLs. A remote attacker can submit a crafted URL to leverage connections and permissions available to the host server.
Remediation
Install security update from vendor's website.