An issue was discovered in chat.php in LiveZilla Live Chat 8.0.1.3 (Helpdesk).
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-9758
- 2026-10-03 Alias added: GHSA-m978-hcqw-jcmw
References
Advisory 1
More Livezilla vulnerabilities
- TI-2013-05237 LiveZilla 5.0.1.4 has a Remote Code Execution vulnerability CVSS 3.1CRITICAL 9.8
- TI-2019-09703 LiveZilla Server before 8.0.1.1 is vulnerable to SQL Injection in… CVSS 3.0CRITICAL 9.8
- TI-2019-09687 LiveZilla Server before 8.0.1.1 is vulnerable to SQL Injection in server.php via the p_ext_rse parameter. CVSS 3.0CRITICAL 9.8
- TI-2019-09704 LiveZilla Server before 8.0.1.1 is vulnerable to CSV Injection in the Export Function. CVSS 3.0HIGH 8.8
- TI-2019-09705 LiveZilla Server before 8.0.1.1 is vulnerable to XSS in mobile/index.php via the Accept-Language HTTP header. CVSS 3.1MEDIUM 6.1
- TI-2013-05782 The setCookieValue function in _lib/functions.global.inc.php in LiveZilla before 5.1.2.1… CVSS 2.0HIGH 7.5
Sources
- CVE-2020-9758 · CVE Program
- CVE-2020-9758 · NVD
- FIRST EPSS
- GHSA-m978-hcqw-jcmw · GitHub Advisory Database · CC BY 4.0
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