High severity · published Jun 19, 2026
CVE-2017-20267
Joomla! Component Calendar Planner 1.0.1 SQL Injection
8.2
CVSS
0.5%
EPSS
No
On KEV
Description
Joomla! Component Calendar Planner 1.0.1 contains an SQL injection vulnerability that allows unauthenticated attackers to inject SQL commands through the category_id parameter. Attackers can send GET requests to the events view with malicious SQL code in the category_id parameter to extract sensitive database information.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 42% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CP
Calendar Planner · Joomlathat
1.0.1 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-20267
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-20267
Product
http://joomlathat.com/
Product
https://extensions.joomla.org/extensions/extension/calendars-a-events/events/calendar-planner/
Exploit
https://www.exploit-db.com/exploits/42501
Third Party Advisory
https://www.vulncheck.com/advisories/joomla-component-calendar-planner-sql-injection