CVE-2026-70371
Received Received - Intake

SQL Injection in Koha Reports Module via reports/issues_avg_stats.pl

Publication date: 2026-08-04

Last updated on: 2026-08-04

Assigner: 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c

Description
Koha's reports/issues_avg_stats.pl builds dynamic SQL in sub calculate by concatenating several user-controlled request parameters directly into the query string. The Line and Column parameters are not validated against any whitelist and land verbatim in identifier positions (SELECT DISTINCTROW, GROUP BY, ORDER BY), and each Filter slot is concatenated raw into single-quoted LIKE, BETWEEN, and comparison fragments with no bound parameters. An authenticated staff user holding the reports module permission can inject arbitrary SQL and read any table reachable by the Koha database user, including borrowers (password hashes, two-factor secrets, personal data), api_keys, and sessions.

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Meta Information

Published
2026-08-04
Last Modified
2026-08-04
Generated
2026-08-04
AI Q&A
2026-08-04
EPSS Evaluated
N/A
NVD
CVE-2026-70371
EUVD
EUVD-2026-52673

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
koha koha *

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.

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Executive Summary

This vulnerability in Koha allows an authenticated staff user with reports module permissions to inject arbitrary SQL code through unvalidated parameters like Line, Column, and Filter. The system directly concatenates these user-controlled inputs into SQL queries without proper sanitization or bound parameters.

Impact Analysis

An attacker could exploit this to read sensitive data from the Koha database, including borrower passwords, API keys, session tokens, and personal information. This could lead to unauthorized access, data breaches, or further system compromise.

Compliance Impact

This vulnerability could result in unauthorized access to personal data, violating GDPR and HIPAA requirements for data protection and confidentiality. Organizations may face legal penalties, reputational damage, and loss of compliance certifications.

Mitigation Strategies

Immediately restrict access to the reports module to only trusted staff users. Review and update Koha database user permissions to limit table access. Apply input validation and parameterized queries to prevent SQL injection in reports/issues_avg_stats.pl.

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