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Vulnerability record · CVE-2020-9758 · published 9 March 2020

CVE-2020-9758: Livezilla cross-site scripting vulnerability

Livezilla · Livezilla

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.

9.6 CVSS 3.1 Critical EPSS 2.5% · top 16.2% CWE-79 · Cross-site scripting
9.6CVSS 3.1 base score, v2 4.3
2.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2013-6225Livezilla path traversal vulnerabilityLiveZilla 5.0.1.4 has a Remote Code Execution vulnerabilityEPSS 27%9.8CVE-2019-12960Livezilla sql injection vulnerabilityLiveZilla Server before 8.0.1.1 is vulnerable to SQL Injection in functions.internal.build.inc.php via the parameter p_dt_s_d.EPSS 1.4%9.8CVE-2019-12939Livezilla sql injection vulnerabilityLiveZilla Server before 8.0.1.1 is vulnerable to SQL Injection in server.php via the p_ext_rse parameter.EPSS 1.4%8.8CVE-2019-12961Livezilla csv injection vulnerabilityLiveZilla Server before 8.0.1.1 is vulnerable to CSV Injection in the Export Function.EPSS 1.4%7.5CVE-2013-7034Livezilla code injection vulnerabilityThe setCookieValue function in _lib/functions.global.inc.php in LiveZilla before 5.1.2.1 allows remote attackers to execute arbitrary PHP code via a …EPSS 1.6%6.8CVE-2013-7385Livezilla vulnerabilityLiveZilla 5.1.2.1 and earlier includes the MD5 hash of the operator password in plaintext in Javascript code that is generated by lz/mobile/chat.php,…EPSS 1.3%6.1CVE-2019-12962Livezilla cross-site scripting vulnerabilityLiveZilla Server before 8.0.1.1 is vulnerable to XSS in mobile/index.php via the Accept-Language HTTP header.EPSS 9.1%6.1CVE-2019-12963Livezilla cross-site scripting vulnerabilityLiveZilla Server before 8.0.1.1 is vulnerable to XSS in the chat.php Create Ticket Action.EPSS 0.82%

Source: NIST National Vulnerability Database (record CVE-2020-9758), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.