CVE-2017-20273 Joomla Event Registration Pro Calendar 4.1.3 SQL Injection
Unauthenticated attackers can execute arbitrary SQL queries via the id parameter to extract sensitive database information from the Joomla Event Registration Pro Calendar plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-20273?
CVE-2017-20273 is a high-severity SQL injection vulnerability in Joomlashowroom Event Registration Pro Calendar, published on 19 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Joomla Event Registration Pro Calendar 4.1.3 contains an SQL injection vulnerability that allows unauthenticated attackers to execute arbitrary SQL queries by injecting malicious code through the id parameter. Attackers can send GET requests to index.php with option=com_registrationpro&view=category&id parameter containing SQL injection payloads to extract sensitive database information.
Weakness: CWE-89
Which versions are affected by CVE-2017-20273?
It affects 1 product.
Products include Joomalshowroom Event Registration Pro Calendar.
How do I fix CVE-2017-20273?
No fix has been published for CVE-2017-20273 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2017-20273 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-20273 exists.
Sources
Also known as GHSA-qq9x-p9f6-rmg7.