CVE-2026-70371: Koha Community Koha

High severity, CVSS 8.8. EPSS: 0.6% chance of exploitation in the next 30 days.

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.

Affected products

• Koha Community Koha: up to and including 24.11.17; from 25.05.00, up to and including 25.05.12; from 25.11.00, up to and including 25.11.06; from 26.05.00, up to and including 26.05.01

Published 2026-08-04. Last modified 2026-08-26.