CVE-2026-57831
Deferred Deferred - Pending Action

Unauthenticated SQL Injection in DP Calendar Joomla Extension

Publication date: 2026-07-15

Last updated on: 2026-07-23

Assigner: Joomla! Project

Description
Joomla Extension - digital-peak.com - Unauthenticated blind SQL injection in DP Calendar 8.18.0 - 10.11.2 - The Joomla extension DP Calendar is vulnerable to an unauthenticated SQL injection.

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Meta Information

Published
2026-07-15
Last Modified
2026-07-23
Generated
2026-08-04
AI Q&A
2026-07-15
EPSS Evaluated
2026-08-03
NVD
CVE-2026-57831
EUVD
EUVD-2026-44599

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
digital_peak dp_calendar *
joomla joomla *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-89 The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.

Attack-Flow Graph

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Executive Summary

The Joomla extension DP Calendar has an unauthenticated SQL injection vulnerability. This means attackers can execute malicious SQL commands without needing to log in, potentially accessing or manipulating the database.

Detection Guidance

To detect this unauthenticated SQL injection vulnerability in DPCalendar, check if your system is running affected versions (8.18.0 or later for Joomla 3 branch or current line 4.4.4 to 6.x). Use commands like 'curl' to test the vulnerable parameter: curl 'http://example.com/index.php?option=com_dpcalendar&view=events&format=feed&filter_created_by=1' --output - 2>/dev/null | grep -i error. If errors or unexpected data appear, the system may be vulnerable.

Impact Analysis

An attacker could steal sensitive data like user credentials or personal information, modify or delete database records, or take control of the Joomla site. This could lead to further attacks or data breaches.

Compliance Impact

This vulnerability could lead to unauthorized access to personal data, violating GDPR and HIPAA requirements for data protection and security. Organizations may face legal penalties and reputational damage.

Mitigation Strategies

Immediately update the DP Calendar extension to the latest patched version. Disable the extension if no patch is available. Review database access logs for unusual SQL queries. Restrict network access to Joomla admin interfaces. Monitor for unauthorized database access or modifications.

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