What’s Vulnerable › Vulnerabilities

CVE-2020-9758

• Severity: critical (CVSS 9.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-03-09 · updated 2026-06-17
• Weakness: CWE-79

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 products

• Livezilla: before 8.0.1.3 — fixed in 8.0.1.3

How to fix

Upgrade to a fixed version: Livezilla 8.0.1.3. Check the vendor advisory for mitigations.

References

• https://github.com/ari034/CVE-2020-9758
• https://github.com/ari034/CVE-2020-9758

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