CVE-2026-71288

Summary

Koha's guided report builder (reports/guided_reports.pl) reads the order_by CGI parameter and, for each value, a dynamically-named {order}_ovalue parameter, and concatenates both directly into an SQL ORDER BY clause with no allowlist or validation: my @order_by = $input->multi_param('order_by'); foreach my $order (@order_by) { my $value = $input->param($order . "_ovalue"); $query_orderby = " ORDER BY $order $value"; }. The resulting string is appended verbatim to the final query in C4::Reports::Guided ($query .= $orderby;) with no escaping. Since ORDER BY columns cannot be bound via prepared-statement placeholders, this requires an explicit allowlist, which does not exist. Any staff account with the low-privilege create_reports or execute_reports permission (commonly granted to non-admin library staff) can perform time-based blind SQL injection against the Koha database, which stores patron PII and staff/LDAP credentials.

Affected Software

Weaknesses

• CWE-89: CWE-89

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

References

• https://github.com/Koha-Community/Koha
• https://github.com/Koha-Community/Koha/blob/master/reports/guided_reports.pl

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