CVE-2019-12962: LiveZilla Server before 8.0.1.1 is vulnerable to XSS in mobile/index.php via the Accept-Language HTTP header.

Q: How do I fix CVE-2019-12962?

livezilla: upgrade to 8.0.1.1. Exact commands for each OS are on this page.

Q: Is CVE-2019-12962 being exploited?

CVE-2019-12962 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2019-12962 affect?

CVE-2019-12962 affects livezilla. Severity is medium (CVSS 6.1). LiveZilla Server before 8.0.1.1 is vulnerable to XSS in mobile/index.php via the Accept-Language HTTP header.

Q: How urgent is CVE-2019-12962?

Priority 50/100. EPSS top 5%: very likely to be exploited; Public exploit reference

This week

MEDIUM 6.1UPGRADE

CVE-2019-12962 is a medium-severity flaw (CVSS 6.1) affecting livezilla. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

LiveZilla Server before 8.0.1.1 is vulnerable to XSS in mobile/index.php via the Accept-Language HTTP header.

Why this priority

EPSS top 5%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	9.1% (top 5%)
CISA exploited list	No
Weakness	CWE-79
Published	2019-06-25
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: livezilla

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-06-25 13:15 UTCPublished CVE record published
2026-06-17 02:15 UTCUpdated Record last modified

livezilla livezilla UPGRADE

Affected: < 8.0.1.1

Fixed in: 8.0.1.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy livezilla || rpm -q livezilla || livezilla --version

2. UPGRADE to 8.0.1.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade livezilla

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade livezilla

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: LiveZilla Server 8.0.1.0 - 'Accept-Language' Reflected XSS
Nuclei scan template: LiveZilla Server 8.0.1.0 - Cross-Site Scripting

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-12962?

livezilla: upgrade to 8.0.1.1. Exact commands for each OS are on this page.

Is CVE-2019-12962 being exploited?

CVE-2019-12962 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-12962 affect?

CVE-2019-12962 affects livezilla. Severity is medium (CVSS 6.1). LiveZilla Server before 8.0.1.1 is vulnerable to XSS in mobile/index.php via the Accept-Language HTTP header.

How urgent is CVE-2019-12962?

Priority 50/100. EPSS top 5%: very likely to be exploited; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2020-9758 CRITICAL 9.6 UPGRADE An issue was discovered in chat.php in LiveZilla Live Chat 8.0.1.3 (Helpdesk)
CVE-2019-12964 MEDIUM 6.1 UPGRADE LiveZilla Server before 8.0.1.1 is vulnerable to XSS in the ticket.php Subject.
CVE-2019-12963 MEDIUM 6.1 UPGRADE LiveZilla Server before 8.0.1.1 is vulnerable to XSS in the chat.php Create Ticket Action.
CVE-2019-12961 HIGH 8.8 UPGRADE LiveZilla Server before 8.0.1.1 is vulnerable to CSV Injection in the Export Function.
CVE-2019-12960 CRITICAL 9.8 UPGRADE LiveZilla Server before 8.0.1.1 is vulnerable to SQL Injection in functions.internal.build.inc.php via the par

References

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