CVE-2026-33639: InvoicePlane SQL injection in tax rate decimal setting

CVE-2026-33639 · Severity: high · CVSS 7.2 · Published 2026-09-25

InvoicePlane is a self-hosted invoicing application used to manage financial documents, clients, and payment records. An administrator can inject malicious SQL code through the tax rate decimal places configuration setting, allowing them to modify or delete database tables that store critical financial data. This can corrupt the database schema, destroy invoice records, and render the application non-functional.

Technologies: InvoicePlane. Vendors: InvoicePlane.

Quick answers

Is CVE-2026-33639 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-33639 being exploited in the wild.
How severe is CVE-2026-33639?
High severity, with a CVSS score of 7.2, published 25 September 2026.
Which products and versions are affected?
InvoicePlane before 1.7.2.
Is there a fix for CVE-2026-33639?
A patch was published on 2026-03-23. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-33639 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-33639?
Check whether you run InvoicePlane at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

InvoicePlane interpolates the administrator-controlled tax_rate_decimal_places setting directly into an ALTER TABLE statement for the ip_tax_rates table in Settings::index() without strict integer validation, allowing DDL injection. An attacker with administrator access can craft a setting value containing SQL clauses to add, remove, or alter database columns. The resulting schema corruption permanently modifies financial data structures and application availability.

Affected products

  • InvoicePlane InvoicePlane before 1.7.2

Timeline

  • 2026-09-25: disclosed
  • 2026-03-23: patched

References

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