SQL Injection Vulnerability in Zap Calendar Lite by Joomla!
CVE-2017-20268

8.8HIGH

Key Information:

Vendor

Zcontent

Status
Zap Calendar Lite
Vendor
CVE Published:
19 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2017-20268?

The Joomla! Component Zap Calendar Lite version 4.3.4 is impacted by an SQL injection vulnerability that permits unauthenticated attackers to execute arbitrary SQL commands. By exploiting the 'eid' parameter via crafted GET requests targeting the RSVP plugin endpoint, attackers can inject malicious SQL code, leading to unauthorized access to sensitive database details, such as the structure and names of tables. This vulnerability poses a significant risk as it can facilitate data breaches and expose critical information stored in the database.

Affected Version(s)

Zap Calendar Lite 4.3.4

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2017-20268 - Proof of Concept

References

https://www.exploit-db.com/exploits/42500
exploit
https://zcontent.net/
product
https://extensions.joomla.org/extensions/extension/calend...
product

CVSS V4

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Ihsan Sencan
.