What’s Vulnerable › Vulnerabilities

CVE-2026-23491: InvoicePlane has Unauthenticated Path Traversal in Guest Controller

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-02-18 · updated 2026-06-17
• Weakness: CWE-22

Description

InvoicePlane is a self-hosted open source application for managing invoices, clients, and payments. A path traversal vulnerability exists in the `get_file` method of the `Guest` module's `Get` controller in InvoicePlane up to and including through 1.6.3. The vulnerability allows unauthenticated attackers to read arbitrary files on the server by manipulating the input filename. This leads to the disclosure of sensitive information, including configuration files with database credentials. Version 1.6.4 fixes the issue.

Affected products

• InvoicePlane: before 1.6.4 — fixed in 1.6.4

How to fix

Upgrade to a fixed version: InvoicePlane 1.6.4. Check the vendor advisory for mitigations.

References

• https://github.com/InvoicePlane/InvoicePlane/commit/add8bb798dde621f886823065ef1841986543c69
• https://github.com/InvoicePlane/InvoicePlane/security/advisories/GHSA-88gq-mv54-v3fc

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