CVE-2020-9758

CRITICAL
9.6
CVSS Score
Published: March 9, 2020 at 06:27 PM UTC
Updated: June 17, 2026 at 03:28 AM UTC
1 product affected across 1 vendorLivezilla

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Severity
CRITICAL9.6
Exploit prediction
EPSS 2%

Description

An issue was discovered in chat.php in LiveZilla Live Chat 8.0.1.3 (Helpdesk). A blind JavaScript injection lies in the name parameter. Triggering this can fetch the username and passwords of the helpdesk employees in the URI. This leads to a privilege escalation, from unauthenticated to user-level access, leading to full account takeover. The attack fetches multiple credentials because they are stored in the database (stored XSS). This affects the mobile/chat URI via the lgn and psswrd parameters.

Affected

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

v < 8.0.1.3
Affected range stops below 8.0.1.3, 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 (1)

x_refsource_MISCThird Party Advisory
https://github.com/ari034/CVE-2020-9758

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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