SQL Injection Vulnerability in Joomla Event Registration Pro Calendar by Joomla
CVE-2017-20273

8.8HIGH

Key Information:

Vendor

Joomlashowroom

Status
Event Registration Pro Calendar
Vendor
CVE Published:
19 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2017-20273?

Joomla Event Registration Pro Calendar version 4.1.3 contains a vulnerability that allows unauthenticated attackers to execute arbitrary SQL commands. By crafting specific GET requests that manipulate the id parameter, attackers can inject malicious SQL code. This exposes the database to unauthorized access, permitting attackers to extract sensitive information stored within. It’s crucial for users of this software to apply available security updates and mitigate this risk to safeguard their data.

Affected Version(s)

Event Registration Pro Calendar 4.1.3

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-2017-20273 - Proof of Concept

References

https://www.exploit-db.com/exploits/42416
exploit
https://www.vulncheck.com/advisories/joomla-event-registr...
third-party-advisory

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
.