CVE-2026-33639
Deferred Deferred - Pending Action

SQL Injection in InvoicePlane Prior to 1.7.2

Vulnerability report for CVE-2026-33639, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-09-25

Last updated on: 2026-09-29

Assigner: GitHub, Inc.

Description

InvoicePlane is a self-hosted open source application for managing invoices, clients, and payments. Prior to 1.7.2, InvoicePlane interpolates the administrator-controlled tax_rate_decimal_places setting into an ALTER TABLE statement for ip_tax_rates in Settings::index() without strict integer validation. A crafted setting value can add clauses to the schema-changing statement and remove or alter required database columns. The resulting schema corruption can permanently modify financial data structures and make the application unavailable. This vulnerability is fixed in 1.7.2.

CVSS Scores

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Meta Information

Published
2026-09-25
Last Modified
2026-09-29
Generated
2026-10-16
AI Q&A
2026-09-25
EPSS Evaluated
2026-10-14
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
invoiceplane invoiceplane to 1.7.2 (exc)

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

InvoicePlane before 1.7.2 allows an admin to inject malicious SQL clauses into a database schema change via the tax_rate_decimal_places setting. This can drop or alter required columns in the ip_tax_rates table, corrupting financial data structures and potentially making the application unusable.

Detection Guidance

Check the InvoicePlane version installed. If it is below 1.7.2, the system is vulnerable. Run: grep -r "version" /path/to/invoiceplane/application/config/config.php or check the admin panel under System Settings.

Impact Analysis

An attacker with admin access could exploit this to corrupt your invoice database, leading to loss or corruption of financial records, application downtime, and inability to generate or manage invoices.

Compliance Impact

This vulnerability could lead to unauthorized data modification or loss, violating integrity requirements in GDPR and HIPAA. Corrupted financial records may fail compliance audits and expose organizations to legal penalties.

Mitigation Strategies

Upgrade InvoicePlane to version 1.7.2 or later immediately. Backup the database before upgrading to prevent data loss. Review database schema for unexpected changes after upgrade.

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