---
id: CVE-2020-16193
title: >-
  osTicket before 1.14.3 allows XSS because include/staff/banrule.inc.php has an
  unvalidated echo $info['notes'] call.
summary: >-
  osTicket before 1.14.3 allows XSS because include/staff/banrule.inc.php has an
  unvalidated echo $info['notes'] call.
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: enhancesoft
product: osticket
affected:
  - osticket < 1.14.3
patched:
  - osticket 1.14.3
published: '2020-08-26'
updated: '2026-07-10'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2020-16193'
references:
  - url: >-
      https://github.com/osTicket/osTicket/blob/develop/include/staff/banrule.inc.php#L67
    label: cve@mitre.org
  - url: >-
      https://github.com/osTicket/osTicket/pull/5616/commits/fb570820ef1138776f929a179906e1d8089179d9
    label: cve@mitre.org
  - url: >-
      https://github.com/osTicket/osTicket/blob/develop/include/staff/banrule.inc.php#L67
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://github.com/osTicket/osTicket/pull/5616/commits/fb570820ef1138776f929a179906e1d8089179d9
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.00587
epssPercentile: 0.45745
ingestedAt: '2026-07-10T19:05:51.221Z'
---

## Overview

osTicket before 1.14.3 allows XSS because include/staff/banrule.inc.php has an unvalidated echo $info['notes'] call.

## Affected

- `osticket < 1.14.3`

## Remediation

Upgrade past the affected range:

- `osticket 1.14.3`