---
id: CVE-2017-20268
title: >-
  Joomla! Component Zap Calendar Lite 4.3.4 contains an SQL injection
  vulnerability that allows unauthenticated attackers to execute arbitrary SQL
  queries by injecting malicious code through the 'eid' parameter
summary: >-
  Joomla! Component Zap Calendar Lite 4.3.4 contains an SQL injection
  vulnerability that allows unauthenticated attackers to execute arbitrary SQL
  queries by injecting malicious code through the 'eid' parameter. Attackers can
  send GET requ…
severity: high
cvss: 8.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N'
cwe:
  - CWE-89
vendor: zcontent
product: zap_calendar_lite
affected:
  - zap_calendar_lite = 4.3.4
published: '2026-06-19'
updated: '2026-08-21'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2017-20268'
references:
  - url: >-
      https://extensions.joomla.org/extensions/extension/calendars-a-events/events/zap-calendar-lite/
    label: disclosure@vulncheck.com
  - url: 'https://www.exploit-db.com/exploits/42500'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/joomla-component-zap-calendar-lite-sql-injection
    label: disclosure@vulncheck.com
  - url: 'https://zcontent.net/'
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00331
epssPercentile: 0.26384
ingestedAt: '2026-08-22T13:32:34.589Z'
---

## Overview

Joomla! Component Zap Calendar Lite 4.3.4 contains an SQL injection vulnerability that allows unauthenticated attackers to execute arbitrary SQL queries by injecting malicious code through the 'eid' parameter. Attackers can send GET requests to the RSVP plugin endpoint with crafted SQL payloads to extract sensitive database information including database names and table structures.

## Affected

- `zap_calendar_lite = 4.3.4`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.